National Geographic Hobby Rock Tumbler Kit for Kids and Adults Ages 8+ | Rough Gemstones, 4 Polishing Grits, Rock Polisher, Geology Science Kit, Rock Tumbling for Kids and Adults, Birthday Gift

CREATE YOUR OWN GEMSTONES - Make any stone sparkle and polish everyday rocks into dazzling gemstones! This rock tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gemstones, thanks to its simple operation and durable design.