Preciosa Czech Fire 6 mm Faceted Round Polished Glass Bead, Black Aurora Borealis, 150-Pack Fire polished beads are all slightly different from each other, this adds to their charm Available in rainbow, aurora borealis or iris finish Beads are faceted round in shape; measures 6 mm diameter Beads are actually more of an oval even though called round Made from bohemian glass; comes in 150/pack