Polymer Clay Rhinestone Beads, Grade A, Half Drilled, Round, Crystal Size: about 6mm in diameter, hole: 1.2mm. Bring sparkling color and beauty to beadwork with glistening rhinestone beads. If you are looking for lots of sparkle, you'll find it in these beads. Decent appearance and charming rhinestone are great for jewelry decoration. It can be matched with hooks, jumprings, and pins to be earrings, bracelets and so on.