METAL: 10k Gold. MEASUREMENTS: Ring size - 6 1/2, ring top is 19mm x 17mm. GEMSTONES: Star sapphire cabochon - approx. 19.6ct ( by formula), Diamonds - approx. 0.60ctw. MARKED: 10k, "davotar". WEIGHT: 9 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.