OVAL BLACK PRECIOUS OPAL RING This ring is set with a flat cabochon of black precious opal. The coloured cameo setting is set with emerald and sapphire cabochons. Set in platinum with small diamonds. Gross weight: 7.97 g. Finger size: 53. Tray size: 2.2 x 1.7 cm. A black opal, emerald, sapphires, diamond and platinum ring. Gross weight : 7,97 gr. Size : 53. Table dimensions : 2,2 x 1,7 cm.