18K BAMBOO MOTIF OPAL & DIAMOND RING: 18K yellow gold ring contains three 5.00 x 3.00 mm oval cabochon cut opals. Blue/green play-of-color. Four round brilliant cut diamonds. Weight: .20 Ct. Approx. Rated VS in clarity and G-H in color. The opals and diamonds are prong set. Weight: 12.5 grams. Size: 6.