Iris Green Rainbow Czech Glass Rondelle Wafer Disc Beads 6mm Czech glass rondelle disc beads available in opaque, translucent, opal, swirl and metallic finishes. 6mm Czech glass discs are small enough for the most delicate of jewelry pieces. Ideal spacer beads on necklaces and bracelets and as accents on seed beadwork/sculptural jewelry. Beads are packed loose, ready to use. Size and pack specifications: Beads are 6mm in diameter. Approximately 60 beads per pack.