METAL: 18k Gold. MEASUREMENTS: Ring size - 4 1/2, ring top is 38mm x 30mm, sits approx. 22mm from the top of the finger. GEMSTONES: Chatham emeralds, Diamonds approx. 0.50ctw. MARKED: 18k. WEIGHT: 36.2 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.