Abacus Glass Bead Jet 12mm x 8mm. Jet abacus bead. Faceted glass rondelle. 12mm x 8mm. These versatile, classically shaped Faceted glass rondelle beads add a twinkle to any piece. Use as a feature with smaller Metallic beads, or try them as spacers between more chunky Lightweight beads to complement a colour theme. Here at Jillybeads we understand that some beaders can be a bit reluctant to buy online so if that’s you, give us a call as we are always more than willing to take your order over the phone, or even add an addition onto your existing order. We like to make your shopping experience as simple and easy as possible!