METAL: Sterling Silver. MEASUREMENTS: Necklace is 17" long, Pendant - 35mm x 22mm. Earrings - 45mm x 14mm. GEMSTONES: Crystal, backed with chrysoprase, black diamonds. MARKED: Webster mark, 925. WEIGHT: 26.3 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise.