This bead is mouthblown authentic Murano Glass. This is our cipolla (onion shape) which is about 20mm. No two are ever exactly alike due to the handwork. We recommend using 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. The holes in the bead vary from about 1.5 to 2.5mm. The color is a transparent red. Price Per Bead.