6PK Raw Pumice, Igneous Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Eisco Labs 6 electronics3 Package include: 20pcsCD4017

Package include: 20pcsCD4017

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6PK Raw Pumice, Igneous Rock Specimens - Approx. 1" - Geologist Selected & Hand Processed - Great for Science Classrooms - Class Pack - Eisco Labs 6 electronics3 Package include: 20pcsCD40176PK Raw Pumice, Igneous Rock Specimens Approx. 1" Geologist Selected & Hand Processed Great for Science Classrooms Class Pack Eisco Labs Product Features PUMICE Pumice is formed from the frothy lava that a volcanic explosion creates. As the frothy lava cools, it hardens as a light weight rock that is filled with small gas bubbles. Because this rock is so porous and light, it can actually float on water GREAT FOR GEOLOGY CLASSROOMS Perfect for