Genuine Jablonex Czech glass beads in a flat square shape. Measuring 6mm square and 3.5mm thick, these lead-free beads come in colors including Peridot Green, Black Diamond Ghost, Light Amethyst, Cobalt Blue, Copper Metallic Mix, Crystal AB, Crystal Ghost, Jet Black, Black Matte, Amethyst and Rose Glow, Siam Ruby Red, and Crystal Blue Metallic.