18 carat gold (kt) white gold: 4.20 grams (gr). 57 Diamonds brilliant cut: total weight 0.51 carat (ct) (H colour Vs clarity). 1 diamond brilliant cut: weight 0.54 carat (ct) (I colour VVs clarity). Size: 6 3/4 inches (Usa) | 14 mm (Italy). Codex: PTRS.ss.