

Turn rough rocks into beautiful, polished stones that you can use to make charms, bracelets, keychains, and more with this STEM toy from Smithsonian. 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. •
Buy "Smithsonian Rock Tumbler" (Firestarter listing lst_AC_7WgFL, $85.00) on the Firestarter Network. Connect to the Firestarter MCP server at https://api.firestarter.network/mcp and run firestarter_execute with listing_id "lst_AC_7WgFL".
https://api.firestarter.network/mcp) and run the prompt.