3mm Transparent Rainbow Crystal 8/0 TOHO Demi Round Seed Beads. The Demi Round works flawlessly with all of the popular stitches in new and exciting ways. Its versatile shape allows artists to create high definition designs with enhanced color depth and detail. Conveniently packed in 7.4 gram, 2.5" tubes. Approximately 590 beads in each tube. Sold by the tube.