METAL: 18k Gold. MEASUREMENTS: Ring size - 6 1/4, ring top is 6mm wide. Center will fit approx. 7.4mm x 7.5mm stone. GEMSTONES: Side diamonds - approx. 0.80ctw. MARKED: 750. WEIGHT: 9.2 grams. Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.