14K OPAL TRIPLET NECKLACE: 14K yellow gold necklace contains one round brilliant cut diamond. Weight: .03 Ct. Approx. Rated VS in clarity and H-I in color. Freeform shaped black opal triplet with blue/green play-of-color. The opal and diamond are prong set. 14K 18'' chain. Weight: 4.3 grams.