Ring Bow – Green Tourmaline 18 carat gold(kt) white gold: 15.00 grams (gr). 86 diamonds brilliant cut: 1.20 carat (ct), total weight (G color VVs clarity). 1 green tourmaline 16.03 carat (ct) (size 16 mm x 14 mm). Size: 6 3/4 inches (Usa) | 14 cm (Italy). Codex: A.PSS.SS.