








π Polish your passion, craft your legacy.
The National Geographic Rock Tumbler Refill Kit offers 1.36 kg of nine diverse rough gemstones including Amethyst and Quartz, paired with a four-stage grit system to transform stones into polished gems. Designed for ages 8+, it includes jewelry fastenings and an educational guide, blending STEM learning with creative craftsmanship.





| Product Dimensions | 13.65 x 13.5 x 13.81 cm; 1.36 kg |
| Manufacturer recommended age | 8 years and up |
| Item model number | NGGEMREFILLMEGA |
| Educational Objective(s) | STEM |
| Language: | English |
| Number of pieces | 9 |
| Assembly Required | No |
| Scale | Medium |
| Batteries Required? | No |
| Batteries included? | No |
| Material Type(s) | Gemstones |
| Remote Control Included? | No |
| Colour | Red |
| ASIN | B07H7WFWYT |
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