METAL: 18k Gold. MEASUREMENTS: Ring size - 5 1/4, ring top is 19mm x 27mm, sits approx. 15mm from the top of the finger. GEMSTONES: Carved coral. MARKED: 18k, Tambetti. WEIGHT: 22.5 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.