METAL: Sterling Silver. MEASUREMENTS: Earrings - 48mm x 15mm, Necklace is 17" long, Pendant - 36mm x 24mm. GEMSTONES: Black Diamonds, Green gemstone, covered with faceted crystal. 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.