NATIONAL GEOGRAPHIC Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults

Learn about the exciting hobby of rock tumbling with National Geographic! Rock tumbling is tons of fun and a great way to start a beautiful rock collection. This set includes all the accessories you’ll need to start polishing dazzling gems. Kids can use the included jewelry fastening to create beautiful homemade jewelry! Contents and Features: • High-quality tumbling machine with powerful motor that will last for years • Automatic shutoff timer so you can set it and forget it • Noise reducing leak-proof barrel with stainless steel lid • Half pound of gemstones from around the world (9 types) and four grades of grit • Jewelry fastenings so you can create your own unique jewelry • Full-color information guide with cool facts about each of the gemstones included • Easy-to-follow rock tumbling instructions • 2-year manufacturer warranty Rock tumbling is a fun activity for children of all ages and promotes an interest in geology and science. Introduce your kid to science the fun wa