METAL: platinum. GEMSTONES: diamonds. MEASUREMENTS: wedding ring size 6.25, band is 3.7mm wide. Engagement ring size 6 (with sizing balls). Center will keep approx .7.5mm stone. MARKED: 950 Plat 50 Co, Pt900 RBO. WEIGHT: 9 grams.Gemstones have not been graded for color and clarity, and tested for clarity and color enhancement, unless stated otherwise.