Large Hole Beads (Greek Ceramic Beads, Silver Plated): Ceramic bead in a loosely formed donut shape, ridged, fine silver plated, ° 15mm. We use them as spacers. These Ceramic Beads, Silver Plated are exceptionally hard wearing due to the high temperature used when firing the silver onto the ceramic base. These are beads with 4mm large holes, very individually shaped--not for perfectionists.