Material: Natural Black Onyx; Hole Size: 1mm; Length: 15.5inch strand; Color: Black; Size: 4x6mm - Approx 98 Beads Per Strand; 5x8mm - Approx 78 Beads Per Strand 6x10mm - Approx 64 Beads Per Strand Significance: Black Onyx – is a powerful protection stone, absorbs and transforms negative energy, and helps to prevent the drain of personal energy. WIDE USAGE: Perfect for arts & crafts, jewelry making projects, such as earrings, key chains, bracelets or necklace pendant drop DIY. It is suitable for Valentine's Day, Mother's day, Christmas, birthday, anniversary, wedding, party or any special occasions. PRODUCT GUARANTEE: 100% Product Quality Guarantee, if you have any question or problem about our product, please contact us.