






✨ Elevate your rock game—because your collection deserves to shine!
National Geographic's GemFoam is a reusable, patent-pending polishing foam designed to add exceptional shine to tumbled rocks. Compatible with any rock tumbler, it can be used up to six times and is easy to store in its mesh bag. Ideal for hobbyists seeking professional results, GemFoam enhances the final polish stage, delivering brilliant, museum-quality finishes in just a few days.





| Item Dimensions | 4.72 x 1.18 x 7.28 inches |
| Size | Medium |
| Material Type | Foam |
| Color | Black |
| Theme | Geology |
| Operation Mode | Manual |
| Educational Objective | Science |
| Number of Players | 1 |
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