METAL: Platinum. MEASUREMENTS: Ring sizes - 6 (engagement) and 4 1/2 (band) - sizing balls can be removed. Center will fit approx. 8.5mm stone. GEMSTONES: Diamonds approx. 1.80ctw. MARKED: Jabel, 10% irid. plat, 901, 141. WEIGHT: 21.6 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.