Material: Natural Matte Gemstone Shape: Round Beads Sizes: 4mm, 6mm, 8mm, 10mm, 12mm Strand Length: 15"-16" inches Bead hole size: .52mm for 4-5mm; .62 for 6-7mm; .82 for 8-9mm; 1.03mm for 10mm and 12mm Beautiful Natural High Quality Matte Gemstone Round Spacer Beads. Perfect for making custom earrings, necklace, bracelets or any other hand made custom jewelry. ** Color may very slightly due to the color calibration of each individual monitor and also different batches from manufactures. Each stone has its unique size, color and pattern. Below is an approximate number of beads on a 15.5" strand by bead size: 4mm - 84 to 92 beads 6mm - 64 to 68 beads 8mm - 44 to 46 beads 10mm - 38 to 40 beads 12mm - 30 to 32 beads