METAL: Platinum. MEASUREMENTS: Ring size - 7 1/2, ring top is 5.4mm x 15mm. GEMSTONES: Center diamond - approx. 0.53ct, side diamonds - approx. 0.05ctw. MARKED: 10% irid. plat. WEIGHT: 3.1 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.