METAL: 14k Gold pendant/18k Gold necklace . MEASUREMENTS: Necklace is 20" long, Pendant - 35mm x 19mm. GEMSTONES: Onyx, Diamond approx. 0.10ct. MARKED: 18k Italy on chain, pendant tested 14k. WEIGHT: 9.6 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.