METAL: 18k Gold. MEASUREMENTS: Ring size - 6 1/2, ring top is 23mm wide. GEMSTONES: Multi color diamonds - orange/brown, orange, green and black - total of 3.02ctw. MARKED: 18k, 3.02, maker's mark. WEIGHT: 9.9 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.