METAL: 18k Gold. MEASUREMENTS: Necklace is 32 1/2" long, large pendant is removable - 58mm in diameter. GEMSTONES: Aventurine beads - 3.5mm, Diamonds - approx. 4.00ctw. MARKED: 361962, Carrera Y Carrera. WEIGHT: 99.4 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.