Crystal Clear Venetian Blown Bead handmade in Murano. Authentic blown Murano Glass Beads. This is our cipolla (onion shape) which is about 20mm no to ever exactly alike due to the handwork. You will need to use a beadcap with this bead to secure the headpin as well as cover the edges of the glass. This is not a defect just how blown beads come out.