Material: Tourmaline. Beads Diameter: 4mm,Height: 2mm,Hole Diameter:0.8-1mm,Length: 38cm (15 inches) Quality: high-quality natural stone beads, finely polished surface, bright color Widely used: beads are very suitable for handmade jewelry design, DIY creative production. For example, bracelets, necklaces, earrings, etc Reminder: The ore creates its unique texture and color during the formation process. Each natural stone bead is unique. The actual natural stone bead color and texture are slightly different from the picture Product Description: The photo shows beads of different sizes Material: Tourmaline. Beads Diameter: 4mm,Height: 2mm,Hole Diameter:0.8-1mm,Length: 38cm (15 inches)