ASIN B086Z6ZB7RImage via Amazon
NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit – Durable Leak-Proof Rock Polisher with 7-Day Timer – Complete Rock Tumbling Kit – Geology Hobby for Kids, Educational STEM Science Kit, Rock Collection
- Create Your Own Gemstones
- A Tumbler THAT'S Made to Last
- All-In-One Tumbling Kit
- Use Gemfoam for Dazzling Results
$64.99
Price as of Oct 16, 2026, 7:47 AM UTC. Prices and availability are subject to change. The price shown on Amazon at the time of purchase applies.
- Checkout happens securely on Amazon
- Read verified customer reviews first
- Shortlisted by Everstead Finds
Disclosure: this page contains affiliate links. As an Amazon Associate, I earn from qualifying purchases, at no extra cost to you.
Key features
Create Your Own Gemstones
Rock tumbling is a hugely popular hobby for kids and adults! This robust rock polisher 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
The durable motor has time and speed control settings so you can set it, and forget it. An improved, leak-proof barrel features a stainless-steel lid.
All-In-One Tumbling Kit
You get 1/2 pound of rough rocks with 9 different types of gemstones inside, 5 jewelry fastenings, tumbler grit, a strainer, and our innovative new GemFoam polishing foam.
Use Gemfoam for Dazzling Results
This rock tumbling kit stands apart from others thanks to our new, reusable GemFoam rock polisher! Add GemFoam and water to the barrel after your final tumbling stage and your gems will have incredible shine!
High-Quality Educational Toys
We proudly make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience isn't stellar, we'll make it right!
NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit – Durable Leak-Proof Rock Polisher with 7-Day Timer – Complete Rock Tumbling Kit – Geology Hobby for Kids, Educational STEM Science Kit, Rock Collection
See the latest price, customer reviews and delivery options on Amazon.
