14K OPAL & DIAMOND NECKLACE & EARRINGS: 14K yellow gold necklace and earrings contain two 2 6.00 mm round opal doublets and 1 freeform 15.00 x 12.00 mm opal doublet. Blue/Green play-of-color. 7 round full cut diamonds. Weight: .06 Ct. Approx. Rated I1 in clarity and H-I in color. 14K yellow gold 1.00 mm snake chain. 18'' in length. Weight 7.6 grams.