3.0CT BLACK OPAL & DIAMOND RING IN 14K: 14K white gold ring contains one oval cabochon cut crystal opal. Weight: 3.00 Ct. Approx. Transparent with Blue/Green play-of-color on orange/brown background. 70 round brilliant cut diamonds. Weight: .45 Ct. Approx. Rated VS in clarity and G-H in color. The opal and diamonds are prong set. Weight: 4.7 grams approx. Size: 7