Approximately 12 x 12mm. ONE LEFT! Price for one bead. The area around the hole is whiter than the middle of the bead, so a bead caps sets it off very nicely, as shown in the earrings below.  These earrings include 12mm Sand & Surf round lampwork glass beads, 4X6mm aqua faceted glass rondelles, Vintaj brass nickel-free french ear wires  ER20, Vintaj 8mm brass nickel-free Etruscan bead caps, Tierracast 4mm brass oxide plated Scalloped bead caps and Vintaj 1.5" brass nickel-free eye pins EP15.