METAL: 18k gold/ sterling silver. MEASUREMENTS: bracelet will fit up to 7" wrist and is 11.3mm wide. GEMSTONES: inlay onyx, mother of pearl. MARKED: B&H, 950 18k 0.740S. WEIGHT : 47.6 grams. Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.