Baksa Notes Dioptase is related to Quartz but is a copper based silicate which makes it green. Drusy Dioptase is a rarity and a very pretty emerald color. Bezel settings, with hammered texture frames. Design Details GOLD - 14k yellow GEMSTONE - Drusy Dioptase, White Drusy Quartz CUT - Cushion and Shield cabochon SIZE - 12x17 mm, 20x28 mm BAIL - Twin hidden bails 5x8 mm inside OA DIMENSIONS - length 47 mm