Tumblergo Rotary rock tumbler

Tumblergo turns a barrel of beach stones, agates or sea glass slowly for weeks while grit does the grinding, until dull, rough rocks come out smooth and shining. You load it, switch it on and let time do the polishing.

• Turns rough stones smooth and glossy
• Four grit stages, about a week each
• Runs on its own, day and night
• A hobby for kids, grandparents and collectors