Material: Black Onyx Size: 10x30mm / 13pcs of stones per strand / 15.5inch long strand Color: Black; Shape: Faceted Teardrop; Hole: approx 1mm 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.