This listing features 20mm black transparent crushed stone beads . each bead is approximately 20mm in diameter with 2mm hole, perfect for beaded pens, jewelry making and crafts. They are made of durable acrylic materials. These beads are great for adding a pop of color and texture to your designs. Use them to create bracelets, necklaces, or earrings. They are perfect for both beginner and experienced jewelry makers. Get creative with these fun and unique beads and let your imagination run wild.