These are also sometimes called a Sputnik bead. This is a round bead with a raised center like a hula hoop. The center is textured. The color is light purple and the bead chanel will accommodate a 0.5 mm cord. These are vintage Czechoslovakian glass beads made in the 1980s or early 90s. These beads were made in molds. Price is for 10 beads.