








💎 Turn rough rocks into runway-ready gems — your DIY jewelry revolution starts here!
The National Geographic Rock Tumbler Mega Refill Kit offers 1.35 kg of nine distinct raw gemstones, including Tiger's Eye and Amethyst, paired with four grades of polishing grit to transform stones from rough to radiant. Complete with jewelry fastenings and an educational STEM guide, this kit empowers users aged 8+ to craft personalized, museum-quality jewelry while deepening their geological knowledge.





| Educational Objective(s) | STEM |
| Language: | English |
| Model Number | NGGEMREFILLMEGA |
| Number of Puzzle Pieces | 9 |
| Assembly Required | No |
| Batteries Required | No |
| Batteries Included | No |
| tech_spec_battery_description_toys | No batteries required |
| Material Type(s) | Gemstones |
| Remote Control Included? | No |
| Colour | roses |
| Product Dimensions | 13.65 x 13.5 x 13.81 cm; 1.36 kg |
| Item model number | NGGEMREFILLMEGA |
| Manufacturer recommended age | 8 years and up |
| Manufacturer | JMW Sales< Inc. |
| Item Weight | 1 kg 360 g |
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