Esmeralda
An esmeralda iyo an gapong alahas asin an baryedad kan mineral beryl (Be3Al2(SiO3)6) kolor berde na igwa nin gira nin chromium o kun minsan vanadium.[1] An beryl igwa nin katagasan nin 7.5–8 sa Mohs scale.[1] An kadaklan kan esmeralda igwa nin dakol na materyal na naluom sa laog durante kan pormasyon kan mahalagang gapo,[2] kaya baga an saindang katagasan (resistance to breakage) pigklasipikar bilang maluya sa pangkagabsan. An esmeralda iyo an sarong cyclosilicate.
Toltolan
[baguhon | baguhon an source]- ↑ 1.0 1.1 Hurlbut, Cornelius S. Jr. and Kammerling, Robert C. (1991) Gemology, John Wiley & Sons, New York, p. 203, ISBN 0-471-52667-3.
- ↑ "Emerald Quality Factors". GIA.edu. Gemological Institute of America. Archived from the original on November 2, 2016. Retrieved November 1, 2016. Unknown parameter
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