METAL: 18K gold. GEMSTONES: green stone, yellow stone. MEASUREMENTS: green stone ring size 6.5, yellow stone ring size 6. Ring top 6.3mm and 7.5mm at widest point. MARKED: 18K JR TWO. WEIGHT: 8.6 grams.Gemstones have not been graded for color and clarity, and tested for clarity and color enhancement, unless stated otherwise.