METAL: 18k Gold. GEMSTONES: Diamonds approx. 0.30ctw. MEASUREMENTS: Pendant is 22mm x 13mm. Necklace - 16" long. MARKED: Chopard 750 LUC Swiss (necklace) 9162205 Chopard 79/4292/0-20 SWISS, 750 luc (pendant). WEIGHT: 13 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.