18 Karat White Gold and Diamond Swirl Necklace by H2 at Hammerman. H2 at Hammerman white gold swirl necklace with pave diamond details, total diamond carat weight is 1.53, diamond color is G-H, diamond clarity is SI, 16 inch long, 0.45 inch at widest point. Push button closure with double safely latch material. 17.9 grams total weight. Matching earrings sold separately.