White Opal Glass Cube Beads Made in Japan These beautiful beads are available in gorgeous finishes: translucent, matte, lined, metallic and rainbow. Japanese glass cubes are small enough for sculptural beadwork, rich enough for bold pieces. The larger holes in cube beads allow them to fit on finer leather, hemp and waxed cotton cords. Beads are packed loose, ready to use. Size and pack specifications: Cubes are approximately 4mm. Approximately 100 beads per pack.