Rondel, crystal glass is a special kind of glass containing at least 24% lead or barium oxide, which increases the refractive index of the glass.
Imitation Crystal Glass Beads, Faceted, Jet
Size: about 4.5mm in diameter, 3.5mm thick, hole: 1mm, about 123~127pcs/strand, 17~17.5 inches(43~44cm)