+Pumice is a lightweight, porous [volcanic rock](/wiki/volcanic_rock) formed when gas-rich [lava](/wiki/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.
+## See also
+- [Volcano](/wiki/volcano)
+- [Rock](/wiki/rock)
+- [Igneous Rock](/wiki/igneous_rock)
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