Pumice is a lightweight, porous volcanic rock formed when gas-rich lava cools quickly, trapping bubbles. This unique natural glass floats on water and is valued as an abrasive, in lightweight concrete, and for personal care.
Pumice is a lightweight, porous volcanic rock formed when gas-rich lava cools quickly, trapping bubbles. This unique natural glass floats on water and is valued as an abrasive, in lightweight concrete, and for personal care.