I am selling a brand new SEALED Explore the wonders of geology with the NATIONAL GEOGRAPHIC Rock Tumbler Kit – Hobby Edition + Gemstone & Jasper Refill. This educational toy is perfect for children aged 8 years and up, as well as adults who are fascinated by rocks and minerals. With this kit, you can turn rough stones into beautiful polished gems. The kit includes a tumbler machine, rough rocks, grit, and polish. Simply follow the instructions and let the tumbler do the work. It's a great way to learn about the geological process and create something beautiful at the same time.