TAKE YOUR ROCK TUMBLING AND GEMSTONE CREATION TO THE NEXT LEVEL!
Tumbler STEM science kit from National Geographic is the perfect way to encourage a love of geology and inspire kids and adults alike with the Earths natural beauty!
- Our rock tumbler kit allows you to set the grinding time according to your preference, ranging from 1 to 7 days. This feature gives you full control over the polishing process, ensuring optimal results for different types of gemstones.
- Rock polisher tumbler kit for kids, with 4 sanding sessions, from rough sanding to fine sanding, combined with time settings, there is a surprise discovery at every turn!