METAL: 18k Gold. GEMSTONES: Fancy diamonds approx. 185 stones. MEASUREMENTS: Ring size approx. 5 to 6 1/2, ring band is 17mm at widest point (ring sizing shank is adjustable). MARKED: 750 3149 AL. WEIGHT: 21.8 grams. Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.