METAL: 18k gold. GEMSTONES: orange tone mother of pearl. MEASUREMENTS: necklace is 37" long. Mother of pearl motif measures 20.5 x 15.5mm. MARKED: Mattioli Torino 750. WEIGHT: 22.9 grams. Comes with box.Gemstones have not been graded for color and clarity, and tested for clarity and color enhancement, unless stated otherwise.