Material: Genuine Natural Black Lava Loose Stone Beads, Stone Beads accord with the EU Environmental Requirement Standard.Safty for your Heathy and Colorful for Your Life. Stone Hole Diameter: 1mm，47pcs/Strand ,Each Stone Ball is Average Same Size.Stone Beads are AAA Top Quality, Smooth, Excellent Polishing Stone Beads Come From Genuine Nature Stone.They are not 102% Perfect,They May Have a Little Crack or Small Flaws,Please Kindly Understanding and do not be too Concerned about it.Beads Strand Length and Quantity is Average,We Will Choose Slightly Larger Stone Beads for You. Stone Beads are not only for Making Beading Beaded Necklaces, but can be used to Nake Earrings, Bracelets, Yoga Bracelets ,Rings ,Anklets, Ear Cuffs, Brooches, Hair Accessories and other Jewelry Making too. Other than Jewelry, Jemstone Stone Beads Can be used to Create Ornaments and Accessories These volcanic lava beads are made from natural basalt, the porous surface making them perfect for absorbing and diffusing essential oils, excellent for beading, jewelry making, DIY gifts, arts & crafts, necklaces, ankles, bracelets, earrings, rings, home & wedding decoration,etc.