Give your jewelry extra dimension and shine with these dark blue cat's eye cube beads. Their 4mm size is ideal for any type of jewelry, and the deep midnight blue hue is great for fun and sophisticated looks. Cat's eye beads, or fiber optic beads, feature a thin light band and change hue as the color reflects and refracts light to give added shape to jewelry. Try mixing these with other round beads in brown and yellow shades to create a twisted look! These beads are sold on 16-inch strands.