Glass has a density of 2.5 g/cc and is the most commonly used bead media for "beadbeating." Beads are sold in one pound bottles with easy pour spouts. Zirconia beads have a density of 5.5g/cc (Twice as dense as glass beads - good for tough tissue). Sold in one pound bottles. …

Zirconia has a density of 5.5g/cc (100% more dense than glass - good for tough tissue). Beads are sold in one pound bottles.