Material: Black Onyx Size&Beads per strand: 8 mm/Approx 48 beads 10mm/Approx 38 beads; Color: Black Shape: Big Faceted Round (32faces cutting) 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. Significance: Black Onyx – is a powerful protection stone, absorbs and transforms negative energy, and helps to prevent the drain of personal energy. PRODUCT GUARANTEE: 100% Product Quality Guarantee, if you have any question or problem about our product, please contact us.