SWAROVSKI CRYSTAL 3mm 5328 XILION Bicone Beads. The new 3m 5328 XILION bicone bead was developed to replace the discontinued 5301 bicone bead, boasts of the revolutionary XILION cut. It promises a distinctively higher brilliance, more fire and greater light reflection with its alternating large and smaller facets. The increased number of facets promises an overall enhancement while the rounder belt line will result in improved and longer wearing comfort of finished projects. Sold in packs of 50 beads unless otherwise noted. SWAROVSKI CRYSTAL ELEMENTS.