Our Black Crystal Beads feature a .925 Sterling Silver core, nickel-free, with glistening black crystals. The bead fits most charm bracelets. Inner core diameter is 4.5mm, bead measures 11mm x 7mm, and weighs 1.5 grams. Create stylish bracelets with hundreds of designs. Mix and match crystal, glass, birthstone, heart, enamel, and animal beads. Perfect for charm bracelets, necklaces, earrings, or keychains. Add a unique story to your jewelry collection.