5 Beautiful Red & Gold Lampwork Barrel BeadsPrice is per five of these beautiful beads. Each measures 22mm x 15mm, drilled as in picture. "Lampwork" means glass that is formed and decorated in a torch flame hot enough to melt the glass. The "lamp" in lampwork came from the oil lamps and blowpipes originally used in seventeenth century France and Italy. Blowing by mouth or with a bellows into an oil lamp flame with a small pipe makes just enough heat to soften and form the softer types of glass.