Large Hole Beads (Greek Ceramic Beads, glazed Sapphire): Ceramic bead flat Squares or washers, glazed Sapphire, ° 12mm. We use them as spacers or end beads before the bead tips. These ceramic beads in glazed Sapphire are exceptionally hard wearing due to the high temperature used when firing the glazed Sapphire color onto the ceramic base. In addition ceramic beads are very heavy and impossible to break. These are beads with up to 4mm large holes, very individually shaped--not for perfectionists.