Vtg Modernist Brutalist 18k Yellow Gold Australian Black Opal & .60ctDiamond Ring 28.7g Ring Size: 6 Weight is 28.7 Grams on my scale Metal: 18k Yellow Gold - Tested & Confirmed Ring is Over 1 1/2" Wide In the Center Amazing Natural Australian Black Opal's & Diamond Accents Gemstones Very Interesting Modernist Brutalist Design Opal Size Are 15mm x 11mm Each Approx. Diamond Weight is Around .60tcw - VS-SI Quality Range In Great Condition, Any Questions Please Feel Free to ask Thank you