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Production or Consumption? Glass Beads
from the Roman Villa of Aiano, Tuscany
CRISTINA BOSCHETTI1 , BERNARD GRATUZE1
SARA LENZI2 AND NADINE SCHIBILLE1
, MARCO CAVALIERI2
,
1
Institut de Recherche sur les Archéomatériaux, CNRS/Université d’Orléans, France
Institut des Civilisations, Arts et Lettres, Université Catholique de Louvain
(UCLouvain), Belgium
2
Excavations in the Roman villa of Aiano yielded twenty glass beads, a pendant, and a glass-recycling
furnace, originally interpreted as a bead workshop. This article re-assesses the evidence of bead making
in light of new data obtained thanks to recent progress in archaeological glass studies. A detailed study
of the typology, technology, and chemical composition of the beads clearly excludes local production.
Instead, two different forming techniques, four different base glasses (Roman, HIMT, Foy 2.1 and Foy
2.1/HIMT), and numerous colouring and opacifying materials point to a well-established and extensive
network of the Roman bead trade, in which Aiano evidently participated. The majority of the beads
can be related to the monumentalization of the villa in the fourth to fifth century AD and represent a
sample of the ornaments worn by its inhabitants.
Keywords: Roman glass beads, glass recycling workshop, Late Antique Tuscany, Roman glass
trade, Roman villa
INTRODUCTION
Glass beads adorning the body were some
of the earliest vitreous materials ever produced in the late fourth millennium BC
(Moorey, 1994: 190–92). They became
increasingly popular during the Late
Bronze Age, when glass production began
more systematically, and beads were recovered in substantial numbers from temple
and palatial complexes in Mesopotamia
and Egypt (Shortland, 2000: 81;
Hodgkinson, 2017: 75–105). In the
eastern Mediterranean, the products of
glass workshops were diverse and beads
were made alongside vessels, inlays, and
figurines (Shortland, 2000: 81). In this
early period, beads were important commodities, recognized for qualities that
went beyond their aesthetic appeal
(Nightingale, 2008). The outstanding
symbolic value attributed to beads is
clearly reflected in the great distances
covered by their trade and their role in
rituals. For example, in the fourteenth
century BC, thousands of Egyptian glass
beads were transported by two ships sunk
off the Anatolian coast at Uluburun and
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of
European Association of Archaeology
doi:10.1017/eaa.2021.34
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European Journal of Archaeology 2021
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Cape Kylidonia (Pulak, 1998; Jackson &
Nicholson, 2010). At this time, Egyptian
and Mesopotamian beads travelled as far
as Scandinavia, where they have been
recovered in Danish burials (Varberg
et al., 2015). In Mesopotamia (Moorey,
1994: 192; Feldman, 2006), Mycenaean
Greece (Nightingale, 2008, with earlier
references), and in Egypt (Müller, 2018,
with references), beads were buried in the
foundation deposits of temples, palaces,
and tombs. In Egypt and Nubia, the use
of beads in building rituals continued
without interruptions for nearly two millennia, illustrated by the evidence from
Ptolemaic and Roman temples (ThenObl uska, 2017), and Coptic churches as
late as the seventh century AD (ThenObl uska, 2013).
In the eleventh to tenth century BC,
when glassmaking appeared for the first
time in the western Mediterranean, beads
were the only products manufactured in
the workshops of Frattesina and other
sites identified in the Po valley (Towle
et al., 2001). These western productions
remained isolated and probably ceased
with the decline of Frattesina at the end
of the tenth century BC (Cavazzuti et al.,
2019). Judging by some exceptional
eighth-century BC black beads documented
in Spain, Anatolia, Slovakia, and Italy
(Conte et al., 2016), some western glass
making and glass working may have continued into the Iron Age. The dynamics
of bead production and trade during the
Iron Age are still insufficiently investigated, and the archaeological record lacks
identified
bead-making
workshops.
However, the varied compositional makeup of Iron Age bead assemblages and their
typological variability seem to reflect a
lively international bead trade (Conte
et al., 2016, 2019). Glass beads were
highly popular at that time and they were
strung on necklaces or bracelets, but they
were also sewn onto clothing as evidenced
by finds in elite burials excavated in
central Italy and Greece (Gleba, 2017).
Until the end of the Iron Age, glass
beads were formed exclusively by winding,
a simple process involving coiling and
tooling a mass of soft glass around a
metallic rod (mandrel). Winding was practiced in all the cultures that produced
glass beads, in Asia, Europe, and Africa.
The Hellenistic period, from the last
decades of the fourth century BC, represents a phase of technological innovation
for bead making, especially in Egypt and
Greece where new and highly specialized
techniques were developed. The identification of these forming techniques is relevant, because technological and chemical
studies show a link between specialized
forming techniques and the area of production (Boschetti et al., 2020a, with
references). A first innovation in
Hellenistic bead making is the invention
of drawing and segmenting. Segmented
beads were formed from hollow glass rods
that were divided into individual beads
with the help of shaping thongs or moulds
with indentations (Spaer, 1993). This
technique was popular in a variant known
as sandwich-gold glass, where a gold leaf
was sandwiched between two layers of colourless glass (Spaer, 1993). At the end of
the third century BC, a workshop in
Rhodes constitutes the first archaeological
proof of the production of beads using this
technique, which probably originated in
Egypt in the fourth century BC (Weinberg,
1983; Spaer, 1993). Another innovation in
Hellenistic Egypt is the mosaic technique,
a variant of winding, in which sections of
polychrome canes are gathered around the
mandrel. This mosaic technique was originally used to make inlays (Bianchi,
1983) and beads from the second century
BC onwards (Liu et al., 2017). Evidence
for the production of wound beads was
found in a second-century BC context at
Delos (Nenna, 1993). Currently Roman
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Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
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beads are poorly served by research: a
comprehensive typology of Roman beads
does not exist, and technological studies
are lacking entirely. Two fourth- to sixthcentury AD workshops identified in
Alexandria, where segmentation and
winding were practised, are currently the
only archaeologically attested contexts of
bead making for the Roman and Late
Antique period (Rodziewicz, 1984; RifaAbou El Nil & Calligaro, 2020). There is
a complete absence of indicators of bead
making in the Italian peninsula, in line
with the general lack of evidence for
Roman glass working, particularly for the
Republican and early Imperial periods
(Boschetti, 2020). Egyptian mosaic and
segmented beads continued to circulate
throughout the Mediterranean, but there
is no comprehensive map of their distribution (Then-Obl uska, 2018).
Thanks to the identification of bead
winding workshops in Scandinavia,
Ireland, and the Netherlands, it is clear
that glass beads were manufactured in
Europe during the Migration period
(Boschetti et al., 2020a, with references).
Egyptian mosaic and segmented beads
were nonetheless still sought after and
traded as far as Scandinavia (Callmer,
1977) and the Caucasus (Bezborodov,
1959). Beads made with a Mesopotamian
compositional signature also appear on the
European market in the seventh century
AD, but their provenance is still unclear
(Boschetti et al., 2020a, with references).
The Migration period is a prolific time
for glass beads, which were used for jewellery as well as for beautifying textiles
(Juwig, 2010; Pion & Gratuze, 2016).
Interestingly, the tiny glass beads used for
decorating clothes were manufactured in
India (Pion & Gratuze, 2016; Boschetti
et al., 2020a), using a complex technique
involving drawing, cold cutting, and hot
polishing (Francis, 1990). Asian beads circulated in Europe until the end of the
3
sixth century, but the origins of this commerce are obscure. A detailed study of
Hellenistic and Roman beads would be
helpful to establish the beginning of this
trade, which could date back to as early as
the end of the third century BC (Francis,
1988).
Against this background of limited
archaeological evidence and fragmentary
studies, the discovery in 2008 of a glassrecycling furnace and seven glass beads in
the Roman villa of Aiano in Tuscany was
enthusiastically identified as a workshop
for the production of beads dating to the
Migration period, allegedly the only one
in Italy (Cavalieri & Giumlia-Mair,
2009). The furnace dates to the sixth
century AD, when the abandoned Roman
building was reoccupied to host artisanal
activities (Deltenre & Orlandi, 2016). The
discussion of the chemical composition of
four beads and a group of tesserae and
other glasses from Aiano in 2009 was
limited to the identification of colourants
and opacifiers (Cavalieri & Giumlia-Mair,
2009). Over the last decade, Roman and
Late Antique glass studies have improved
significantly; it is now possible to identify
different base glasses and trace their
place of origin by the heavy elements
introduced as impurities in the silica
source (Freestone et al., 2018, with references). New data obtained during the
archaeological campaigns at Aiano since
2009 cast doubt on the identification of
bead production in Aiano. After ten years
of research, the building sequence is now
clear and there are enough elements to
understand the relationship between the
beads found at Aiano and the history of
this complex building.
Here we present a re-assessment of the
Aiano beads, examining all the specimens
recovered between 2005 and 2019 and
discussing their depositional history, typology, forming technique, and chemical
composition. The main objective is to
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European Journal of Archaeology 2021
place the Aiano beads in a broad
Mediterranean and European context and
to evaluate critically their previous interpretation as local products. We aim not
only to clarify the meaning and function
of the beads in Aiano, but also to reflect
on the dynamics that regulated the production and circulation of glass beads
between Late Antiquity and the early
Middle Ages.
THE ROMAN VILLA
OF
AIANO
The Roman villa of Aiano is located in
present-day Tuscany, in the district called
Tuscia et Umbria since the beginning of
the fourth century AD (Figure 1). The
building occupies a central position in the
Elsa river valley, on top of a plateau
created by a palaeo-landslide. The structures, investigated between 2005 and
2019, consist of a large central hall with
three apses, surrounded by a corridor with
five apses or lobes (N). The hall was preceded on the south side by a quadrangular
vestibule connected to a wide corridor
oriented north-south (R), which looked
onto three rectangular rooms on the west
side (A, B, C). The eastern wing was
organized as a sequence of small rooms.
During the sixth-century AD reoccupation
of the villa, this sector housed a series of
workshops dedicated to the collection and
recycling of materials taken from the
building. The principal feature of the
building’s north wing is a large rectangular
hall with four pilasters that opened on the
east side onto an open area framed by a
porch (V). The building was occupied
from the end of the third century to the
middle of the seventh century AD and the
analysis of the features identified six major
phases (Cavalieri, 2020; Cavalieri &
Peeters, 2020) (Figure 2, Table 1).
The earliest phase (Phase 1) survives
only in rooms A and B, in the south-
western sector of the site. During Phase 2,
the building twice underwent monumental
renovations. The first intervention, datable
to the second half of the fourth century,
was the creation of a hall with six apses,
surrounded by a corridor with five lobes,
opening to the south onto a rectangular
antechamber. The hall probably functioned as a passageway leading to the northern sector of the villa. In a second
phase, possibly a few decades later, the
former project was radically modified.
Three of the six apses of the main hall
were demolished, creating a space for
three rectangular rooms. The hall was
paved with an opus signinum floor decorated with tesserae, which is still in situ.
This intervention was crucial in defining
the function of the rooms and transforming the central hall into a monumental
hall.
At the end of the fifth century (Phase 3),
the villa was abandoned, and parts of the
structures collapsed. After a relatively
short period of abandonment, the site was
reoccupied at the beginning of the sixth
century. The building now served various
productive activities, where all the materials used in the villa (marble, glass, lead,
bronze, bricks) were systematically collected and recycled (Deltenre & Orlandi,
2016). These activities were responsible
for the fragmentation and dispersal of the
residual material from the earlier phases of
the building. At the present stage of the
archaeological investigations, it is possible
to identify the south and north wing as
the two main sectors of artisan activity.
Activities in the south wing are clearly
visible archaeologically and include a
smithy (Room B) and other pyrotechnological activities (Area 5000) (Cavalieri,
2013: 302). The north wing housed a
combination of pyrotechnological activities
difficult to interpret and service spaces.
Interestingly, the rooms surrounding the
three-apsidal hall were characterized by a
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Figure 1. Map of Tuscany, with Aiano (Adapted from cartography of DARMC https://darmc.harvard.edu/).
Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
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European Journal of Archaeology 2021
Figure 2. Plan of the Aiano villa, after the 2018 excavation campaign, showing the distribution of
the beads, divided by compositional group and forming technique (polychrome beads are classified according to the base glass used for the body) (adapted from a drawing by A. Novellini). © UCLouvain.
Table 1. Chronological phases of the Aiano villa.
Phase Chronology
1
End of third century–first half of fourth century
2
Second half of fourth century–second half of
fifth century AD
3
End of fifth century–first half of sixth century AD
4
Second half of the sixth–middle of seventh
century AD
5
From the second half of seventh century AD
6
Modern era
AD
high level of specialization: Room I was
dedicated to the transformation of copper
alloys, activity in Room H was probably
linked to a nearby pottery kiln (Room F),
while Room L yielded traces of gold
working (Cavalieri et al., 2009; Cavalieri
& Giumlia-Mair, 2009; Cavalieri, 2013;
Deltenre & Orlandi, 2016). Particularly
relevant for our present study is the discovery of a glass-recycling furnace in Room
O. The furnace was used to work both
cullet and glass mosaic tesserae, an activity
clearly connected to Room A, where 6000
mosaic tesserae, partially altered by heat,
were found. In this space, the cullet was
stored before being recycled, and two pits
were used for roasting and washing the
tesserae to remove the mortar. Hundreds
of fragmentary glass inlays were recovered
from a series of small open spaces located
next to the corridor (R), probably similarly
dedicated to the storage of glass cullet
(Cavalieri et al., 2016).
The function of the spaces in the north
wing is more difficult to determine, but it
is clear that Room U served as storage for
fragments of floor mosaics for re-use
(Cavalieri et al., 2013: 538, 543, figs 2–3).
Part of this space also served the daily
needs of the craftsmen. There were, for
example, a series of structures for cooking
and possibly for baking in corridor K. In
short, throughout most of the sixth
century, the villa at Aiano was an openair workshop devoted to collecting and
transforming materials spoliated from
the abandoned building. Similar multiactivity recycling workshops are documented in other Late Antique Tuscan
sites (Sebastiani, 2016: 66), glass-recycling, for instance, is clearly documented
in Spolverino (Sebastiani & Derrick,
2020).
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Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
All productive activities came to an end
and the building was finally abandoned
during Phase 4. The decline of the villa is
evident from the second half of the
seventh century (Phase 5) in the form of
collapsed walls almost everywhere in the
building. The only traces of occupation are
the tombs of two individuals, possibly pilgrims, buried in rooms Q and Z. Modern
agricultural activities are responsible for
damaging the features (Phase 6).
THE GLASS BEADS FROM AIANO:
DEPOSITION AND DISTRIBUTION
Twenty glass beads and one pendant were
retrieved during the excavation campaigns
conducted at Aiano from 2005 to 2019.
The beads were all deposited in backfills
formed between the sixth and the seventh
century, when the artisanal activities came
to an end and the area was abandoned
(Table 1 and Supplementary Material
Table S1). These backfills are characterized by a high degree of residuality. Finds
dating to the second half of the fourth
century, the time of the monumental
renovation of the villa, are accompanied by
late fifth- to seventh-century material.
Earlier material is less frequent. The beads
were scattered across the vast area occupied by the villa, without any significant
clustering, and no bead was deposited in
fills associated with the glass-recycling
furnace excavated in the ambulatio of the
five-lobed hall (Room O). An important
concentration of glass-working waste was
retrieved from Area 7000, located immediately outside the central hall and interpreted as a zone used as dump, collecting
the waste generated by the craft activities.
The visual examination of all the glass
finds from Aiano ascertained that there is
no evidence that could be linked to bead
working, such as tools, glass canes, and/or
failed beads. The beads are a small group
7
of finished objects, which speaks against a
productive site. Some fragments of a
ceramic container with holes found near
the furnace were described as a brazier
used for bead making (Cavalieri &
Giumlia-Mair, 2009). This identification
was based on the representation of a
similar object in a Renaissance woodcut
print entitled Der Glasser (Cavalieri &
Giumlia-Mair, 2009: 1026–27). A careful
examination of the scene, however, reveals
that the woodcut print does not actually
depict a glass-working scene, but the
assembly of a stained-glass window.
Moreover, braziers are unsuitable for
glass working and the object excavated in
Aiano certainly had a different function.
The glass-working waste from Area 7000
includes fragments of vessels and tesserae
deformed by heat, fragments of refractory
material with adhering glass, and masses
of tooled coloured glass (Figure 3). These
finds are evidence of the recycling of colourless and coloured glass, but it is impossible to ascertain whether this glass was
shaped into new objects at Aiano or
whether it was moved to secondary workshops as unprocessed glass. As documented during the fourth century AD at
Aquileia (Boschetti et al., 2016) and
during the ninth century at San Vincenzo
al Volturno (Schibille & Freestone, 2013),
colourless glass was recycled and coloured
by adding mosaic tesserae. A similar recycling process probably took place in Aiano,
where the deposits associated with the
furnace yielded an exceptional concentration of windowpanes and mosaic tesserae.
MATERIALS
AND
METHODS
The technology for forming beads can be
easily identified by visual examination and
is the main criterion adopted to classify
the beads from Aiano. All twenty beads
and the pendant were selected for
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European Journal of Archaeology 2021
Figure 3. Glass lumps and mosaic tesserae deformed from the heat of the furnace retrieved from the
dump outside the villa (Area 7000).
chemical analysis (Figure 4). The cleaned
but unprepared samples were analysed by
LA-ICP-MS (laser ablation coupled with
inductive plasma mass spectrometry) at
IRAMAT-CEB in Orléans (France),
using a Resonetics M50E excimer 193 nm
laser and a Thermo Fischer Scientific
ELEMENT XR mass spectrometer. The
analyses were conducted with 5 mJ energy,
10 Hz pulse frequency and a beam diameter that ranges from 30 to 100 μm
depending on the transition metals and
particles present in the glass (Gratuze,
2013).
Typology and forming technology
The current literature on the typology of
beads circulating during the Roman
Empire and the early Middle Ages is very
limited, but sufficient to place the Aiano
beads in a geographical and chronological
framework. While the Aiano beads are
clearly different from the types circulating
in Migration-period Europe (Callmer,
1977; Burgmann, 2004; Boschetti et al.,
2020a), they are reminiscent of Roman
and Late Antique types (Mandruzzato &
Marcante, 2008). From the point of view
of the forming technique, the corpus of
Aiano beads only contains wound and segmented beads, two of the four forming
techniques documented in the ancient
Mediterranean (Figure 4). Drawn, coldcut, hot-polished, and mosaic beads are
absent.
The majority of the Aiano beads (n =
17) and the pendant (TCC09) were made
by winding. Three small, monochrome
beads (TCC01, 05, 015) can be identified
with types that were popular from the
third to the sixth century and imitate precious stones (Swift, 2003). One light blue
bead (TCC04) of this group belongs to a
type well documented in Egypt and Nubia
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Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
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Figure 4. The Aiano beads, divided by forming technique and base glass composition, with indication
of the sample number, cobalt source, yellow and white opacifiers.
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from the fourth to the sixth century
(Then-Obl uska, 2018; Then-Obl uska &
Wagner, 2017). Such beads were often
mounted in gold or bronze jewellery in
combination with real stones. Seven beads
and the pendant TCC09 from Aiano are
distinguished by the black glass from
which their body was made (TCC06, 07,
11, 12, 13, 17, 18). This type of glass was
particularly appreciated for making ornaments from the third to the fifth century
(Cosyns, 2011). The black bead with red,
white, and light blue mottled decoration
(TCC12) finds parallels in the Late
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Antique burials of the Fayoum and in the
jewellery workshop excavated in the Diana
quarter in Alexandria (Boschetti et al.,
2020a: 12, with references; Rifa-Abou El
Nil & Calligaro, 2020). Similar beads
have been recorded in Italy from the first
to the fifth century (Mandruzzato &
Marcante, 2008: 4, 158). The workshop
of the Diana quarter also offers a parallel
for the spiral bead TCC18. Jug-shaped
pendants, like an exemplar from Aiano
(TCC09), are attested in the Levant and
Egypt and were quite popular in the
Italian peninsula during the second half
of the fourth and the first half of the
fifth century (Mandruzzato & Marcante,
2008: 4, 36–37, 74–75; Bolla, 2011;
Mandruzzato, 2017). They are usually
interpreted as Christian amulets, and often
deposited in burials of women and children (Spaer et al., 2001: 171; Bolla, 2011:
33). A possible Egyptian origin can be
assumed for the bead TCC21 since its
shape and decoration corresponds to Late
Antique Egyptian spindle whorls (Spaer
et al., 2001: 259–61).
Interestingly, the few publications on
Roman beads tend to identify them as products that circulated locally or on a regional
scale (Burgmann, 2004; Mandruzzato &
Marcante, 2008). However, looking at the
beads from a broad geographic perspective,
the scenario changes radically. For
example, a bead from Aquileia, identical to
the large, spherical black bead TCC07
decorated with crossed white trails and
green and yellow eyes, is dated to the
fourth to fifth century on the basis of parallels from present-day Austria, which is
assumed to be its place of origin
(Mandruzzato & Marcante, 2008: 64).
Other examples of this type were recovered
from British burials of the middle of the
fifth to the first quarter of the sixth
century, where they are thought to be
locally produced (Burgmann, 2004: 77,
92). In the 1970s, Margaret Guido
European Journal of Archaeology 2021
discussed the circulation of this type of
bead in Britain and noticed some matching
parallels in fourth- to fifth-century continental contexts, classifying this type as an
exotic Roman product imported from
mainland Europe (Guido, 1978: 101–02,
232). A specimen excavated from a thirdcentury burial in Classe, the port city of
Ravenna, and associated with black beads
decorated with coloured zig-zag trails,
similar to Aiano bead TCC06, is evidence
of an earlier circulation of this type in Italy
(Montevecchi, 2000). Other wound beads
from Aiano, like the melon bead TCC19,
or the cylindrical beads TCC02, 03, and
20, belong to very common types, and their
date cannot be safely established on typological grounds.
Only three monochrome beads are
drawn and segmented (TCC08, 14, 16).
The green bead TCC08 is furthermore
finished by hot polishing, as occasionally
documented in beads of this kind (Spaer,
1993). Drawn beads of this type are
Egyptian products, popular in Europe
since Late Antiquity, with a major diffusion from the fourth century AD onwards.
Chemical composition
To further refine the chronology and provenance of the glass beads from Aiano, we
can draw on the chemical analysis of the
glass (Supplementary Material Table S1).
Ancient glass can be classified into different primary production groups, according
to the nature of the raw materials used by
the glassmakers. From the Hellenistic
period up to the ninth century AD, the
dominant trend in Mediterranean glassmaking was the use of natron as the main
fluxing agent (Shortland et al., 2006).
Indeed, all the beads and the pendant
from Aiano are natron type glasses with
low MgO and K2O concentrations (<2%
wt). Several samples have higher
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Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
Figure 5. Base glass characteristics of the Aiano
beads, separated as a function of Al2O3/SiO2 and
TiO2/Al2O3 ratios.
phosphorus and elevated potassium oxides,
with lower chlorine contents. These features are markers of pollution probably
due to recycling and/or extended secondary working (Schibille & Freestone, 2013;
Jackson & Paynter, 2016). The different
compositional groups of first-millennium
natron glasses can be distinguished on the
basis of the ratios of Al2O3/Si2O and
TiO2/Al2O3 that reflect the heavy mineral
and feldspar contents of the silica source
(Freestone et al., 2018). The glasses used
for the Aiano beads are broadly consistent
with three major compositional groups
(Figure 5). Most samples (n = 26) correspond to Roman glass made and circulating
throughout the Roman Empire from the
first to the third century (Jackson, 2005;
Silvestri et al., 2008; Paynter & Jackson,
2019). Antimony or manganese were
often added directly during the primary
production in their capacity as decolourizers. The addition of manganese was
typical of Levantine glass making, while
antimony was preferred in Egypt. The
Na2O/SiO2 and CaO/Al2O3 ratios in
Roman glasses can be used to distinguish
Egyptian antimony-decolourized from
Levantine manganese-decolourized glass
because it is currently believed that Roman
and Late Antique glass made in Egypt has
a higher soda and lower lime content than
11
Figure 6. Na2O/SiO2 and CaO/Al2O3 ratios of
the Roman samples from Aiano, compared to different Roman glass reference groups (Roman Sb,
Roman Mn, Roman mixed), based on the glass
finds from the Iulia Felix shipwreck (IF) (data
source: Silvestri, 2008; Silvestri et al., 2008).
contemporary Levantine glass (Jackson,
2005; Freestone, 2015, 2020). With a few
exceptions, the Aiano Roman glasses
appear to represent a mixture of recycled
Roman Sb and Mn glasses (Figure 6).
A second group (n = 7), with higher
TiO2/Al2O3 can be identified as belonging to the so-called Foy 2.1 group, named
after Danièle Foy, who identified it (Foy
et al., 2003) (Figure 5). This compositional group is widely distributed in
Europe and North Africa from the second
half of the fifth to the seventh century and
is of Egyptian origin (Foy et al., 2003;
Freestone et al., 2018; De Juan Ares et al.,
2019; Barfod et al., 2020). A third group
(n = 6), with even higher TiO2/Al2O3
ratios resembles HIMT (High Iron,
Manganese, and Titanium) glass made in
Egypt during the fourth and fifth centuries
(Freestone et al., 2018, with references).
However, these samples have exceptionally
high iron contents that would have
augmented the titanium oxide levels and
thus may be closer to Foy 2.1 (Figure 5,
Table S1). Finally, one sample, with the
highest TiO2/Al2O3, has the typical values
of HIMT glass (Figure 5).
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12
European Journal of Archaeology 2021
The identification of the colouring
technology underlying the Aiano beads
can serve as an additional chronological
marker (Figure 4). The majority of the
Roman glasses are opacified with calcium
and lead antimonate that were commonly
used until the fourth century AD
(Boschetti et al., 2020b, with references).
The transition to tin-based compounds is
documented systematically from the fourth
century, and this change emerged first in
the eastern Mediterranean (Tite et al.,
2008). This new technology underlies one
yellow (TCC9) and two Roman white
glasses (TCC 11, 12), and one sample of
the Foy 2.1 group (TCC17). The cobaltbearing raw materials can similarly serve as
a temporal marker in so far as the high
Co/Ni ratios typical of Roman glasses
decrease over time (Gratuze et al., 2018).
In all, with the exception of two of the
Aiano Roman glass beads (TCC05, 21),
the cobalt to nickel ratios are indeed high
(Figure 7). The later cobalt signature can
be detected in all Foy 2.1 samples except
one (TCC14) (Figure 7).
CHRONOLOGY
AND
PROVENANCE
The relationships between base glass,
forming technology, typology, and, in
polychrome beads, the combination of
different base glasses, colourants, and
opacifiers are useful to establish their
relative chronology and provenance. The
chemical composition is particularly
helpful for the chronology of the monochrome wound beads because they are
difficult to date on typological grounds.
Four beads are made with Roman glass:
the colourless melon bead TCC19 and
three drop-shaped beads (TCC04, 05,
15). In the opaque green bead TCC04,
the association of Roman base glass with
calcium antimonate as an opacifier supports a date not later than the fourth
century. By contrast, the blue bead
TCC05 is opacified by tin oxide and is
most likely to be a post-fourth century
artefact. The spiral black bead TCC18 is
made of Foy 2.1/HIMT glass and can be
matched with similar black beads probably made in Egypt during the fourth and
fifth centuries (Cosyns, 2011). A similar
date can be proposed for the simple
barrel-shaped colourless bead TCC01
made from HIMT glass.
The polychrome wound beads can be
divided into two groups. The first group
includes six beads (TCC03, 06, 07, 10,
13, 20), all made with recycled Roman
glass, antimony-based opacifiers, and
Roman cobalt with a high Co/Ni ratio
(TCC13). These criteria imply a date
probably in the fourth century at the
latest. Two beads (TCC06, 07) with typological parallels from the third century,
may be residual, originating from the first
phase of the villa. A second group, including four beads (TCC02, 11, 12, 21) and
the pendant TCC09, combines Foy 2.1
and HIMT glass for the body and recycled
Roman glass for the decoration of the
beads. The green Roman glass thread
applied on the HIMT/Foy 2.1 red bead
TCC02 is opacified by calcium antimonate.
In the other beads of this group and in the
pendant TCC09, the Roman glass is opacified by tin oxide (TCC11, 12) calcium
antimonate (21) and lead stannate
(TCC09). Roman cobalt is present in the
Foy 2.1 translucent body of one mottled
bead (TCC11). The Roman blue thread of
the bead TCC21, opacified by calcium
antimonate, is coloured by a late source of
cobalt. Finally, one blue mottled bead
(TCC17) is entirely made of Foy 2.1 glass.
The translucent blue body is coloured by a
post-fourth century cobalt raw material,
and the white dots are opacified by tin
oxide. This is the only bead where the base
glass, the cobalt raw material, and the opacifier point to a date not earlier than the
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Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
13
CONCLUSIONS
Figure 7. Cobalt relative to nickel concentrations
distinguish Roman from Late Antique cobalt
sources and confirm the chronological separation of
the Roman, Foy 2.1, and Foy 2.1/HIMT glasses
used in the Aiano beads.
middle of the fifth century. The Egyptian
base glass compositions and the typological
parallels support the hypothesis that the
Aiano beads were imported from Egypt.
This interpretation is highly probable especially for the three mottled beads (TCC11,
12, 17), the bead/spindle whorl TCC21,
and the jug-shaped pendant TCC09.
The three drawn-segmented beads
(TCC8, 14, and 16) are made with Foy
2.1 glass. Both the base glass and the
forming technology lead us to identify
these beads as Egyptian products, manufactured between the fifth and the
seventh century. The Roman cobalt identified in the blue bead TCC14 suggests a
date during the earliest phase of circulation of the Foy 2.1 base glass, in the
middle of the fifth century. The distribution of the findspots of the beads, divided
by chemical composition and forming
technology, does not reveal significant
clustering. The exception are the three
drawn-segmented beads that were found
in contexts connected by a direct stratigraphic correlation. These three beads
might have been strung together, but
there are too few elements to demonstrate
this hypothesis (Figure 2).
The re-analysis of the corpus of the
Aiano glass beads changes their interpretation, date, and connection to the villa
and the glass-recycling infrastructures
investigated there. The stratigraphic position of the beads and the lack of archaeological indicators of bead production
at Aiano rule out a local production
during the reoccupation of the building.
The results of the typological, technological, and chemical analyses establish a
direct link with the life of the villa during
its main period of prosperity. The middle
of the fourth to the fifth century AD, to
which the majority of the beads and the
pendant belong, was the period in which
the building underwent a fundamental
monumentalization. It can be reasonably
assumed that the Aiano beads were ornaments worn by the people who lived in
the villa before it was abandoned. A few
beads can be dated to as early as the
middle of the third century and can be
assigned to the first phase of the building.
All the drawn beads and at least half
the wound beads and the pendant are
imports, probably from Egypt. Rather
than being local products, the Aiano
beads are objects obtained through an
exchange network operating at a
Mediterranean and European level. Beads
travelled exceptionally long distances in
the period between the Bronze Age and
the Iron Age, and, later, during the
Migration period. Contrary to previous
perceptions of Roman beads as generally
worthless products, produced and consumed locally, the clear identification of
exotic beads among the finds from Aiano
leads to a necessary re-assessment of the
status of Roman glass beads in terms of
their aesthetic, economic, and symbolic
value. While the international dimension
of the bead trade during the Roman
and Late Antique period or the extent of
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14
European Journal of Archaeology 2021
its market is currently far from understood, the results obtained for the Aiano
group support a model of long-distance
exchange.
SUPPLEMENTARY MATERIAL
To view supplementary material for this
article, please visit https://doi.org/10.1017/
eaa.2021.34.
ACKNOWLEDGMENTS
This project has received funding from the
European Research Council under the
European Union’s Horizon 2020 research
and innovation programme (grant no.
647315 to Nadine Schibille). The ‘Regio
VII, The Elsa Valley during the Roman
Age and Late Antiquity’ project has
received funding from the Belgian Fund
for Scientific Research (FSR-FNRS) and
the municipality of San Gimignano in
Italy. For help with storage in San
Gimignano and archaeological and topographical drawing, we would like to thank
Dr Gloriana Pace and Dr Alessandro
Novellini. For the excavation of the villa
of Aiano, we are grateful to the
Soprintendenza Archeologia, Belle Arti e
Paesaggio of Siena, Grosseto and Arezzo.
The funding organizations have had no
influence in the study design, data collection, analysis, decision to publish, or preparation of this manuscript.
REFERENCES
Barfod, G.H., Freestone, I.C., Lesher, C.E.,
Lichtenberger, A. & Raja, R. 2020.
‘Alexandrian’ Glass Confirmed by Hafnium
Isotopes. Scientific Reports, 10: 11322.
https://doi.org/10.1038/s41598-020-68089-w
Bezborodov, M.A. 1959. Glasherstellung bei
den slawischen Völkern an der Schwelle
des Mittelalters. Wissenschaftliche Zeitschrift
der Humboldt-Universität zu Berlin, 8:
187–93.
Bianchi, R.S. 1983. Those Ubiquitous Glass
Inlays. Journal of Glass Studies, 25: 29–35.
Bolla, M. 2011. Clastidium e l’area Pleba. In:
R. Invernizzi, ed. …Et in memoriam
eorum. La necropoli romana dell’area Pleba
di Casteggio:. Casteggio: Commune di
Casteggio, pp. 39–269.
Boschetti, C. 2020. Vetro e blu egizio nel
Ninfeo di Segni: aspetti decorativi, tipologici e tecnologici. In: F.M. Cifarelli, ed. Il
Ninfeo di Q. Mutius a Segni. Rome:
Quasar, pp. 55–67.
Boschetti, C., Gratuze, B. & Schibille, N.
2020a. Commercial and Social Significance
of Glass Beads in Migration-Period Italy:
The Cemetery of Campo Marchione.
Oxford Journal of Archaeology, 39: 319–42.
https://doi.org/10.1111/ojoa.12200
Boschetti, C., Leonelli, C., Rosa, R.,
Romagnoli, M., Ángel, M., Tévar, V. &
Schibille, N. 2020b. Preliminary Thermal
Investigations of Calcium Antimonate
Opacified
White
Glass
Tesserae.
Heritage, 2: 549–60. https://doi.org/10.
3390/heritage3020032
Boschetti, C., Mantovani, V. & Leonelli, C.
2016. Glass Coloring and Recycling in
Late Antiquity: A New Case Study from
Aquileia (Italy). Journal of Glass Studies,
58: 69–86.
Burgmann, B. 2004. Glass Beads from Early
Anglo-Saxon Graves: A Study of the
Provenance and Chronology of Glass Beads
from Early Anglo-Saxon Graves, Based on
Visual Examination. Oxford: Oxbow.
Callmer, J. 1977. Trade Beads and Bead Trade
in Scandinavia, ca 800–1000 AD (Acta
archaeologica Lundensia Series in 4o, 11).
Lund: Gleerup & Bonn: Habelt.
Cavalieri, M. 2013. Quid igitur est ista villa?
L’Etruria
centro-settentrionale
tarda
Antichità e alto Medioevo. Nuovi dati e
vecchi modelli a confronto sulla villa
d’Aiano-Torraccia di Chiusi. In: G.
Schörner, ed. Leben auf dem Lande. ‘Il
Monte’ bei San Gimignano. Ein römischer
Fundplatz und sein Kontext. Vienna:
Phoibos, pp. 283–319.
Cavalieri, M. 2020. Investigating Transformations
through Archaeological Records in the Heart
of Tuscany: The Roman Villa at Aiano
between Late Antiquity and the Early
Downloaded from https://www.cambridge.org/core. IP address: 93.19.39.117, on 18 Oct 2021 at 11:32:40, subject to the Cambridge Core terms of use, available at
https://www.cambridge.org/core/terms. https://doi.org/10.1017/eaa.2021.34
Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
Middle Ages. In: P. Cimadomo, R.
Palermo, R. Pappalardo & R. Pierobon
Benoit, eds. Before/After: Transformation,
Change, and Abandonment in the Roman
and Late Antique Mediterranean. Oxford:
Archaeopress, pp. 97–113.
Cavalieri, M. & Giumlia-Mair, A. 2009.
Lombardic Glassworking in Tuscany.
Materials and Manufacturing Processes, 24:
1023–32. https://doi.org/10.1080/1042691
0902987119
Cavalieri, M. & Peeters, A. 2020. Dalla villa
al cantiere. Vivere in Toscana tra tarda
Antichità ed alto Medioevo: la villa
d’Aiano (Siena). In: M. Cavalieri & F.
Sacchi, eds. La villa dopo la villa.
Trasformazione di un sistema insediativo ed
economico in Italia centro-settentrionale tra
tarda Antichità e Medioevo. Louvain:
Presses Universitaires de Louvain, pp.
61–78.
Cavalieri, M., Baldini, G., Giumlia-Mair, A.,
Montevecchi, N., Novellini, A. &
Ragazzini, S. 2009. San Gimignano (SI).
La villa di Torraccia di Chiusi, località
Aiano. Dati ed interpretazioni dalla V
campagna di scavo, 2009. Notiziario della
Soprintendenza per i Beni archeologici della
Toscana: 492–517.
Cavalieri, M., Camin, L. & Paolucci, F. 2016.
I sectilia vitrei dagli scavi della villa
romana di Aiano-Torraccia di Chiusi
(Siena, Toscana). Journal of Glass Studies,
58: 286–91.
Cavalieri, M., Lenzi, S. & Cantisani, E. 2013.
La fine della villa tardoantica di AianoTorraccia di Chiusi (San Gimignano,
Siena): la sistematica distruzione dei suoi
arredi. Nuovi dati archeologici su litotipi e
sistemi decorativi. In: C. Angelelli, ed.
Atti del XVIII colloquio dell’associazione
italiana per lo studio e la conservazioen del
mosaico. Tivoli: Ante Quem, pp. 537–44.
Cavazzuti, C., Cardarelli, A., Quondam, F.,
Salzani, L., Ferrante, M., Nisi, S., et al.
2019. Mobile Elites at Frattesina: Flows
of People in a Late Bronze Age ‘Port of
Trade’ in Northern Italy. Antiquity, 93:
624–44. https://doi.org/10.15184/aqy.2019.59
Conte, S., Arletti, R., Mermati, F. & Gratuze,
B. 2016. Unravelling the Iron Age Glass
Trade in Southern Italy: The First TraceElement Analyses. European Journal of
Mineralogy, 28: 847–51. https://doi.org/10.
1127/ejm/2016/0028-2572
15
Conte, S., Matarese, I., Vezzalini, G.,
Pacciarelli, M., Scarano, T., Vanzetti A.,
et al. 2019. How Much Is Known About
Glassy Materials in Bronze and Iron Age
Italy? New Data and General Overview.
Archaeological and Anthropological Sciences,
11: 1813–41. https://doi.org/10.1007/
s12520-018-0634-6
Cosyns,
P.
2011.
The
Production,
Distribution and Consumption of Black
Glass in the Roman Empire During the
1st–5th Century AD: An Archaeological,
Archaeometric and Historical Approach
(unpublished PhD dissertation, Free
University of Brussels).
De Juan Ares, J., Vigil-Escalera Guirado, A.,
Cáceres Gutiérrez, Y. & Schibille, N.
2019. Changes in the Supply of Eastern
Mediterranean Glasses to Visigothic
Spain. Journal of Archaeological Science, 107:
23–31. https://doi.org/10.1016/j.jas.2019.
04.006
Deltenre, F.-D. & Orlandi, L. 2016. « Rien ne se
perd, rien ne se crée, tout se transforme ».
Transformation and Manufacturing in the
Late Roman Villa of Aiano-Torraccia di
Chiusi (5th-7th Century AD) – Villa
romana di Aiano-Torraccia di Chiusi.
Postclassical Archaeologies, 6: 71–90.
Feldman, M. 2006. Diplomacy by Design:
Luxury Arts and an ‘International Style’ in
the Ancient Near East, 1400–1200
BCE. Chicago (IL): University of Chicago
Press.
Foy, D., Picon, M., Vichy, M. & Thirion
Merle, V. 2003. Caractérisation des verres
de la fin de l’Antiquité en Méditerranée
occidentale : l’émergence de nouveaux
courants commerciaux. In: D. Foy & M.D. Nenna, eds. Échanges et commerce du
verre dans le monde antique. Actes du
Colloque de l’Association française pour
l’archéologie du verre, Aix-en-Provence et
Marseille, 7–9 juin 2001. Montagnac:
Monique Mergoil, pp. 41–85.
Francis, P. Jr 1988. Glass Beads in Asia. Part
I.
Introduction.
Asian
Perspectives
(Honolulu), 28: 1–21.
Francis, P. Jr 1990. Glass Beads in Asia, Part
II: Indo-Pacific Beads. Asian Perspectives
(Honolulu), 29: 1–23.
Freestone, I.C. 2015. The Recycling and
Reuse of Roman Glass: Analytical
Approaches. Journal of Glass Studies, 57:
29–40.
Downloaded from https://www.cambridge.org/core. IP address: 93.19.39.117, on 18 Oct 2021 at 11:32:40, subject to the Cambridge Core terms of use, available at
https://www.cambridge.org/core/terms. https://doi.org/10.1017/eaa.2021.34
16
Freestone, I.C. 2020. Apollonia Glass and its
Markets: An Analytical Perspective. In: O.
Tal, ed. Apollonia-Arsuf, Final Report of
the Excavations, 2: Excavations Outside the
Medieval Town Walls. Winona Lake (IN):
Eisenbrauns, pp. 341–48.
Freestone, I.C., Degryse, P., Lankton, J.,
Gratuze, B. & Schneider, J. 2018. HIMT,
Glass Composition and Commodity
Branding in the Primary Glass Industry.
In. M.P. Rosenow, A. Meek & I.C
Freestone, eds. Things that Travelled:
Mediterranean Glass in the First
Millennium AD. London: UCL Pres, pp.
159–90.
Gleba, M. 2017. Tracing Textile Cultures of
Italy and Greece in the Early First
Millennium BC. Antiquity, 91: 1205–22.
https://doi.org/10.15184/aqy.2017.144
Gratuze, B. 2013. Glass Characterisation
Using Laser Ablation Inductively Coupled
Plasma Mass Spectrometry Methods. In:
K. Janssens, ed. Modern Methods for
Analysing Archaeological and Historical
Glass, 1: 201–34. https://doi.org/10.1002/
9781118314234.ch9
Gratuze, B., Pactat, I. & Schibille, N. 2018.
Changes in the Signature of Cobalt
Colorants in Late Antique and Early
Islamic Glass Production. Minerals, 8:
225. https://doi.org/10.3390/min8060225
Guido, M. 1978. The Glass Beads of the
Prehistoric and Roman Periods in Britain
and Ireland. London: Thames & Hudson.
Hodgkinson, A. 2017. Technology and
Urbanism in Late Bronze Age Egypt
(Oxford Studies in Egyptology, 1).
Oxford: Oxford University Press.
Jackson, C.M. 2005. Making Colourless Glass
in the Roman Period. Archaeometry, 47:
https://doi.org/10.1111/j.1475763–80.
4754.2005.00231.x
Jackson, C.M. & Nicholson, P.T. 2010. The
Provenance of Some Glass Ingots from
the Uluburun Shipwreck. Journal of
Archaeological Science, 37: 295–301. https://
doi.org/10.1016/j.jas.2009.09.040
Jackson, C.M. & Paynter, S. 2016. A Great
Big Melting Pot: Exploring Patterns of
Glass Supply, Consumption and Recycling
in
Roman
Coppergate,
York*.
Archaeometry, 58: 68–95. https://doi.org/
10.1111/arcm.12158
Juwig, C. 2010. Die Gewandreliquie der heiligen Bathilde. Überlegungen zur ihrem
European Journal of Archaeology 2021
Bildstatus und Funktionskontext. In: C.
Juwig & C. Kost, eds. Bilder in der
Archäologie –Archäologie der Bilder?
(Tübinger Archäologische Taschenbücher, 8).
Münster, New York, München & Berlin:
Waxmann, pp. 197–211.
Liu, R.K., Holland, S. & Holland, T. 2017.
Ancient Nubian Face Beads: The
Problem with Suppositions. Ornament,
40(2): 34–39.
Mandruzzato, L. 2017. Vetro. In: F. Fontana,
ed. Scavi ad Aquileia III. Aquileia, l’insula
tra foro e porto fluviale: lo scavo
dell’Università degli Studi di Trieste 1, la
strada. Trieste: Editreg, pp. 293–301.
Mandruzzato, L. & Marcante, A. 2008. Vetri
antichi del Museo Archeologico Nazionale di
Aquileia. Ornamenti, oggettistica e vetro pre- e
post-romano (Corpus delle Collezioni del
Vetro in Friuli Venezia Giulia, 4). Roma:
Arbor Sapientiae.
Montevecchi, G. 2000. Corredo funerario,
Classe (Ravenna), via Romea sud, podere
Giorgioni, tomba 29. In: M. Marini
Calvani, ed. Aemilia. La cultura romana in
Emilia
Romagna
dal
III
secolo
a. C. all’età costantiniana. Venezia: Marsilio,
pp. 159–61.
Moorey, P.R.S. 1994. Ancient Mesopotamian
Materials and Industries: The Archaeological
Evidence. Oxford: Clarendon Press.
Müller, M. 2018. Foundation Deposits and
Strategies of Place-Making at Tell elDab’a/Avaris. Near Eastern Archaeology,
81: 182–90. https://doi.org/10.5615/neareastarch.81.3.0182
Nenna, M.-D. 1993. La verrerie d’époque
hellénistique à Délos. Journal of Glass
Studies, 35: 11–21.
Nightingale, G. 2008. Tiny, Fragile,
Common, Precious: Mycenaean Glass and
Faience, Beads and Other Objects. In: C.
Jackson & E.C. Wagner, eds. Vitreous
Materials in the Late Bronze Age Aegean.
Oxford: Oxbow Books, pp. 64–104.
Paynter, S. & Jackson, C. 2019. Clarity and
Brilliance: Antimony in Colourless Natron
Glass Explored Using Roman Glass
Found in Britain. Archaeological and
Anthropological Sciences, 11: 1533–51. https://
doi.org/10.1007/s12520-017-0591-5
Pion, C. & Gratuze, B. 2016. Indo-Pacific
Glass Beads from the Indian Subcontinent
in Early Merovingian Graves (5th–6th
Century AD). Archaeological Research in
Downloaded from https://www.cambridge.org/core. IP address: 93.19.39.117, on 18 Oct 2021 at 11:32:40, subject to the Cambridge Core terms of use, available at
https://www.cambridge.org/core/terms. https://doi.org/10.1017/eaa.2021.34
Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
=
=
=
Spaer, M. 1993. Gold-Glass Beads: A Review
of the Evidence. BEADS: Journal of the
Society of Bead Researchers, 5: 9–25. https://
surface.syr.edu/beads/vol5/iss1/5
Spaer, M., Barag, D., Ornan, T. & Neuhaus,
T. 2001. Ancient Glass in the Israel
Museum: Beads and Other Small Objects.
Jerusalem: Israel Museum.
Swift, E. 2003. Late-Roman Bead Necklaces
and Bracelets. Journal of Roman
Archaeology, 16: 336–49. https://doi.org/
10.1017/s1047759400013167
Then-Obl uska, J. 2013. Medieval Transcultural
Medium: Beads and Pendants from Makurian
and Post-Makurian Dongola in Nubia. Polish
Archaeology in the Mediterranean, 22: 679–720.
Then-Obl uska, J. 2017. Beads and Pendants
from the Late Harbor Temple and Harbor
Temenos in the Red Sea Port of Berenike:
Techniques, Functions and Affiliations.
Polish Archaeology in the Mediterranean, 26:
193–210.
Then-Obl uska, J. 2018. Beads and Pendants
from the Hellenistic to Early Byzantine
Red Sea Port of Berenike, Egypt, Season
2014 and 2015. Polish Archaeology in the
Mediterranean, 27: 203–33.
Then-Obl uska, J. & Wagner, B. 2017. Glass
Bead Trade in Northeast Africa in the
Roman Period. In: S. Wolf & A. De
Pury-Gysel, eds. Annales du 20e Congrès de
l’Association internationale pour l’histoire du
verre. Rhaden/Westf: Marie Leidorf, pp.
248–56.
Tite, M., Pradell, T. & Shortland, A. 2008.
Discovery, Production and Use of TinBased Opacifiers in Glasses, Enamels and
Glazes from the Late Iron Age Onwards:
A Reassessment. Archaeometry, 50: 67–84.
https://doi.org/10.1111/j.1475-4754.2007.
00339.x
Towle, A., Henderson, J. & Bellintani, P.
2001. Frattesina and Adria: Report of
Scientific Analyses of Early Glass from the
Veneto. Padusa, 37: 7–68.
Varberg, J., Gratuze, B. & Kaul, F. 2015.
Between Egypt, Mesopotamia and
Scandinavia: Late Bronze Age Glass
Beads Found in Denmark. Journal of
Archaeological Science, 54: 168–81. https://
doi.org/10.1016/j.jas.2014.11.036
Weinberg, G.D. 1983. A Hellenistic Glass
Factory on Rhodes: Progress Report.
Journal of Glass Studies, 25: 37.
=
Asia, 6: 51–64. https://doi.org/10.1016/j.
ara.2016.02.005
Pulak, C. 1998. The Uluburun Shipwreck:
An Overview. The International Journal of
Nautical Archaeology 27: 188–224. https://
doi.org/10.1016/s1057-2414(98)80031-9
Rifa-Abou El Nil, P. & Calligaro, T. 2020.
Un atelier de taille de pierre semiprécieuses à Alexandrie. In: M.-T. DinhAudouin, D. Olivier & P. Rigny, eds.
Chimie et Alexandrie dans l’Antiquité. Les
Ulis: EDP Sciences, pp. 247–66.
Rodziewicz, M. 1984. Les habitations
romaines tardives d’Alexandrie à la lumière
des fouilles polonaises a Kom el-Dikka.
Warsav: PWN, Éditions Scientifiques de
Pologne.
Schibille, N. & Freestone, I.C. 2013.
Composition, Production and Procurement
of Glass at San Vincenzo al Volturno:
An Early Medieval Monastic Complex
in Southern Italy. PLoS ONE, 8:
e7647. https://doi.org/10.1371/journal.pone.
0076479
Sebastiani, A. 2016. Glass and Metal Production
at Alberese: The Workshops and the
Manufacturing District of Spolverino.
Postclassical Archaeologies, 6: 63–70.
Sebastiani, A. & Derrick, T.J. 2020. A
Regional Economy of Recycling over Four
Centuries at Spolverino (Tuscany) and
Environs. In: C.N. Duckworth & A.
Wilson, eds. Recycling and Reuse in the
Roman
Economy.
Oxford:
Oxford
University Pres, pp. 359–82.
Shortland, A. 2000. Vitreous Materials at
Amarna: The Production of Glass and
Faience in 18th Dynasty Egypt (BAR
International Series 827). Oxford: British
Archaeological Reports.
Shortland, A., Schachner, L., Freestone, I. &
Tite, M. 2006. Natron as a Flux in the
Early Vitreous Materials Industry: Sources,
Beginnings and Reasons for Decline. Journal
of Archaeological Science, 33: 521–30. https://
doi.org/10.1016/j.jas.2005.09.011
Silvestri, A. 2008. The Coloured Glass of Iulia
Felix. Journal of Archaeological Science, 35:
1489–1501. https://doi.org/10.1016/j.jas.
2007.10.014
Silvestri, A., Molin, G. & Salviulo, G. 2008.
The Colourless Glass of Iulia Felix. Journal
of Archaeological Science, 35: 331–41. https://
doi.org/10.1016/j.jas.2007.03.010
17
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European Journal of Archaeology 2021
BIOGRAPHICAL NOTES
Cristina Boschetti graduated in Curatorial
Studies from the University of Parma in
2001 and in Classics from the same university in 2005, followed by a diploma in
Conservation of Paintings from ENAIP,
Brescia, in 2004 and a PhD in
Archaeological Science from the University
of Padua in 2009. She has since held postdoctoral positions at the universities of
Nottingham, Padua, and Cairo. In 2008,
she joined the Institut de Recherche sur les
Archéomatériaux at the University of
Orléans, as researcher on the ERC-funded
project GlassRoutes, directed by Nadine
Schibille. Her research interests include the
study of the economy and technology of
glass from the Hellenistic to the medieval
eras and of mosaics and wall paintings of
these periods, with a focus on workshop
practices.
Address: IRAMAT-CEB, UMR5060,
CNRS/Université d’Orléans, 3D, rue de la
Férollerie, 45071 Orléans cedex 2, France.
[email:cristina.boschetti@cnrs-orleans.fr].
ORCiD: https://orcid.org/0000-0003-4499779X.
Bernard Gratuze is director of research at
the CNRS, Institut de Recherche sur les
Archéomatériaux, University of Orléans.
His research interests include the development of analytical protocols using laser
ablation inductively coupled plasma mass
spectrometry (LA-ICP-MS) for glass
(as well as lithic materials) to study their
production and trade from protohistory to
the modern period. He studies glass
making processes and recipes since the
beginning of the second millennium BC,
with a particular interest for transitions
(e.g. change from soda plant ash fluxes to
natron in the early first millennium BC, or
from natron to forest plant ashes fluxes in
the late first millennium AD). He recently
identified, with colleagues, Indian glass
beads imports in early medieval western
Europe.
Address: IRAMAT-CEB, UMR5060, CNRS/
Université d’Orléans, 3D, rue de la Férollerie,
45071 Orléans cedex 2, France. [email:
bernard.gratuze@cnrs-orleans.fr]. ORCiD:
https://orcid.org/0000-0001-6136-8085.
Marco Cavalieri graduated in Classics
from the University of Parma, followed by
a Specialisation Diploma in Greek and
Roman Archaeology from the University
of Florence and a PhD in Archaeology
form the University of Perugia. He is full
professor of Archaeology and History of
Ancient Art at the Université Catholique
of Louvain (UCLouvain, Belgium), where
he was appointed in 2003. His main
research interests include Roman archaeology, with a focus on urbanism and topography of the Cisalpine region; urbanism,
architecture and art, as expressions of the
ideology of Roman power; and the archaeology of the Italic world and Roman provinces. He is director of three UCLouvain
archaeological missions in Italy: Aiano
since 2005, Cures Sabini, Rieti, since
2014, and Ostia since 2019.
Address: Institut des Civilisations, Arts et
Lettres, Université Catholique de Louvain
(UCLouvain), Place B. Pascal, 1, Collège
Erasme, BP L3.03.13, 1348 Louvain-laNeuve, Belgique. [email: marco.cavalieri@
uclouvain.be]. ORCiD: https://orcid.org/
0000-0002-9825-1910.
Sara Lenzi obtained an MA in Archaeology
from the University of Florence in 2011,
with a dissertation on Roman painted
marble slabs in the collections of
Kunsthistorisches Museum, Vienna. In
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https://www.cambridge.org/core/terms. https://doi.org/10.1017/eaa.2021.34
Boschetti et al. ‒ Glass Beads from the Roman Villa of Aiano, Tuscany
2015 she obtained a PhD in Archaeology
from the University of Florence, a study
that investigated the polychromy of the socalled monochromes on marble from
Pompeii and Herculaneum. She is an external collaborator at UCLouvain, as a
member of the team excavating Aiano. Her
main research interests include polychromy
on Roman sculpture, Roman wall painting,
opus sectile, and the study of spoliation and
recycling during the early Middle Ages.
Address: Institut des Civilisations, Arts et
Lettres, Université catholique de Louvain
(UCLouvain), Place B. Pascal, 1, Collège
Erasme, BP L3.03.13, 1348 Louvain-laNeuve, Belgique. [email: sara.lenzi2014@
gmail.com]. ORCiD: https://orcid.org/00000003-4057-3631.
Nadine Schibille obtained her PhD in the
History of Art from the University of
19
Sussex in 2004. During her doctoral
research she developed an interdisciplinary
strategy to investigate the material and
aesthetic aspects of light in the art and
architecture of Byzantium. Following an
MSc from the Institute of Archaeology at
UCL in 2005, Nadine has held postdoctoral positions at Stanford University, the
Getty Institute, and the University of
Oxford. She joined the CNRS in 2015 as
chargé de recherche to lead an ERC2014-CoG project entitled GlassRoutes
(ID: 647315) that traces Mediterraneanwide developments in the production, trade,
and consumption of glass using scientific
methods, in particular LA-ICP-MS.
Address: IRAMAT-CEB, UMR5060,
CNRS/Université d’Orléans, 3D, rue de la
Férollerie, 45071 Orléans cedex 2, France.
[email: nadine.schibille@cnrs-orleans.fr].
ORCiD: https://orcid.org/0000-0001-92420392.
Production ou consommation? Les perles en verre de la villa romaine d’Aiano en
Toscane
Vingt perles en verre, un pendentif et un four de recyclage du verre, interprété dans un premier temps
comme celui d’un atelier de fabrication des perles, ont été découverts lors des fouilles de la villa romaine
d’Aiano. Dans cet article, l’hypothèse d’une présence d’artisans perliers sur le site de la villa est
confrontée à de nouvelles données obtenues grâce aux progrès récents des études effectuées sur les verres
archéologiques. L’étude combinée de la typologie des perles, de leur technologie de production et de leur
composition chimique met en évidence la présence de deux techniques de façonnage différentes (perles
enroulées et tubes étirés et segmentés), et de quatre verres de compositions différentes (Roman, HIMT,
Foy 2.1 et Foy 2.1/HIMT). On observe aussi l’emploi de différents matériaux et techniques de coloration et d’opacification (opacification avec l’aide de composés d’étain et d’antimoine et utilisation de
deux minerais de cobalt). Ces résultats excluent clairement l’hypothèse d’une production locale des perles
et montrent qu’Aiano était intégré au sein d’un large réseau de commerce antique de perles. La plupart
des perles qui y ont été trouvées peuvent être attribuées à la phase de monumentalisation de la villa du
IVe au Ve siècle, et sont représentatives des éléments de parure portés par ses habitants. Translation by
the authors
Mots-clés: perles en verre romaines, four de recyclage du verre, Toscane à la fin de l’Antiquité,
commerce du verre romain, villa romaine
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European Journal of Archaeology 2021
Herstellung oder Konsum? Die Glasperlen aus der römischen Villa von Aiano in
der Toskana
Ausgrabungen in der römischen Villa von Aiano ergaben zwanzig Glasperlen, einen Anhänger und
einen Glasrecyclingofen, der ursprünglich als Perlenwerkstatt interpretiert wurde. Dieser Artikel
betrachtet erneut die Beweislage im Licht neuer Angaben und berücksichtigt dabei die jüngste Forschung
in archäologischen Glasstudien. Eine detaillierte Untersuchung der Typologie, Technologie und chemischen Zusammensetzung der Perlen schließt eine lokale Produktion eindeutig aus. Stattdessen deutet
das Vorkommen zweier unterschiedlicher Formgebungstechniken, vier verschiedener Rohgläser (römisch,
HIMT, Foy 2.1 und Foy 2.1/HIMT) und zahlreicher Farbstoffe, Trübungsmittel und Techniken auf
ein gut etabliertes und weitverzweigtes Netz des römischen Perlenhandels hin, an dem Aiano offensichtlich beteiligt war. Die Mehrzahl der Perlen können mit der Monumentalisierung der Villa im vierten
bis fünften Jahrhundert in Zusammenhang gebracht werden und repräsentieren einen Teil der von den
Einwohnern getragenen Ornamente. Translation by the authors
Stichworte: römische Glasperlen, Glasrecyclingwerkstatt, Toskana in der Spätantike, römischer
Perlenhandel, römische Villa
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