Necklace – Heliodor and Amethysts 18 carat gold (kt) white gold: 35.00 grams (gr). 7 amethysts and 14 yellow heliodor: total weight 63.00 carat (ct). 26 diamonds brilliant cut: total weight 1.20 carat (ct) (G color VVs clarity). Length: 17 inches (Usa) | 43 cm (Italy). Codex: Rpes.