Smithsonian Rock Tumbler

Turn 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!

• Ages 10+ 
  
• Turn rough rocks into beautiful, polished stones!
• Includes accessories to make charms, bracelets, and keychains
• Mimics the same process as the ocean
• STEM poster (35" x 23") teaches about different types of rocks and how they form