METAL: 18k Gold. MEASUREMENTS: Earrings are 55 long, circles are 45mm in diameter (removable, can be worn as small hoops). GEMSTONES: Diamonds - approx. 11.16ctw. MARKED: Cc mark, 418452, 750. WEIGHT: 37.9 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.