METAL: 18k Gold. MEASUREMENTS: Ring size - 8, ring top is 31mm x 31mm. GEMSTONES: Jet, Green gemstones, Diamonds - approx. 1.50ctw. MARKED: Valente, 750, Italian mark. WEIGHT: 24.8 grams. Gemstones have not been graded for color and clarity, and tested for clarity and color enhancement, unless stated otherwise.