Large Hole Beads (Greek Ceramic Beads, Raku): Ceramic bead flat triangles or washers, Raku, ° 15mm. We use them as spacers or end beads before the bead tips. While the color of Raku beads does not wear off due to the high temperature used when firing the Raku onto the ceramic base, Raku beads nevertheless tend to chip and break easier. Small chips may exist. Raku beads are very light in weight. These are beads with large holes, very individually shaped--not for perfectionists.