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ore deposit environments
This expansion pack is perfect for those who took a specialty bug pinning workshop where the Sunset was not included
and hands-on STEM learning
Find the animals that interest you and uncover new favorites along the way
Smithsonian Rock Tumbler Rocks & Fossils ore deposit environmentsTurn rough rocks into beautiful, polished stones that you can use to make charms, bracelets, keychains, and more. Begin by tumbling the included rocks in a barrel with water and grit, then repeat this cycle using progressively finer grits. In just weeks, the Smithsonian Rock Tumbler mimics the process that takes oceans thousands of years! Turn rough rocks into beautiful, polished stones! Includes accessories to make charms, bracelets, and keychains.