Pure platinum Genuine Cabochon Amethyst & Natural Diamond Bangle Bracelet 37.9g. Excellent condition. This pure platinum bracelet features 3 genuine oval cabochon amethysts. The center amethyst measures approximately 11.03mm X 9.06mm and the other amethysts measure approximately 9.10mm X 6.91mm. There are 65 natural diamonds that weigh approximately 0.65CTTW and H/SI1 quality. The top of this bracelet measures 1.10 inches approximately at its widest point. The internal dimensions measure 2.30 inches X 2.30 inches. There is a hinge and clasp. This bracelet weighs 37.9 grams.