Swarovski Advance Crystal 4mm bicone beads. This is the most recent and most advanced version of the bicone bead. Xilion bead has 24 facets to make it even more sparkly than the original bicone. Advance crystal is the latest innovation from Swarovski and means that the beads are lead free (contain 0.009 % lead or less).
I sell Swarovski 4mm bicone in packs of 12 or 100.