This is a straight-sided lentil bead, which was made in my lampwork studio in France. Average size of the bead is 36mm x 14mm. The bead has been made on a 2mm mandrel (horizontal hole). It is etched. My beads are made of Effetre, Kugler, Reichenbach, Doublehelix and CIM glass. They are kiln-annealed to ensure strength.