NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit – Includes Rough Gemstones, 4 Polishing Grits, Jewelry Fastenings, and Detailed Learning Guide – Great STEM Science Kit for Geology Enthusiasts

Amazon.com Price:  $50.99 (as of 24/04/2023 04:27 PST- Details)

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.
A TUMBLER THAT’S MADE TO LAST – Our high-quality tumblers are made with a durable motor that’s designed to last for years. The leakproof rubber barrel reduces sound, making it 75% quieter than other plastic models. An excellent STEM activity for kids.
A COMPLETE HOBBY TUMBLING KIT – Everything you need to create polished gemstones: the tumbler, four polishing grits, sifter, nine types of real rough gemstones, plus a detailed full-color learning guide. Makes a great gift for girls and boys!