METAL: Platinum. MEASUREMENTS: Ring size - 7 1/4, ring top is 8.8mm x 16mm. GEMSTONES: Aquamarine - approx. 2ct ( by formula), two diamonds - approx. 0.50ctw. MARKED: Tiffany & Co, pt950. WEIGHT: 6.3 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.