Add a splash of sun into your jewelry designs with these bright 4mm round cat's eye beads. Their light yellow coloring and 4mm size make them perfect for giving a warm touch to any type of jewelry. Mix them with spring greens and baby blues in a necklace, or combine them with other glass beads in a bracelet. These fiber optic beads as they're also known as feature a thin band of light in the center of each bead, giving them the appearance of a cat's eye. This band allows the beads to slightly change shades in the light for added dimension. These beads are sold on 16-inch strands.