METAL: 18k Gold. MEASUREMENTS: Ring size - 6 1/4, ring top is 17mm x 15mm. GEMSTONES: Diamonds - approx. 1.20ctw. Ruby - comes with GRS cert, natural Burmese ruby - 3.63ct. MARKED: 750. WEIGHT: 8.2 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.