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💎 Turn Rough Rocks into Coveted Gems—Because Your Collection Deserves to Shine!
The Blue Marble NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit is a premium, durable rock polisher designed for STEM learning and creative expression. Featuring a leak-proof stainless steel barrel with a 7-day automatic timer, it includes 2 pounds of assorted rough stones with nine gemstone varieties, polishing media, jewelry fastenings, and the exclusive reusable GemFoam for a brilliant finish. Perfect for kids and adults alike, this all-in-one kit combines educational value with hands-on fun, empowering users to craft stunning polished gems and unique jewelry pieces.
| Educational Objective(s) | STEM |
| Language: | English |
| Model Number | NGHOBBYTUMBLER2 |
| Assembly Required | No |
| Batteries Required | Yes |
| Batteries Included | No |
| tech_spec_battery_description_toys | Not required (mains powered) |
| Material Type(s) | Multiple |
| Remote Control Included? | No |
| Remote Control Type | None - Not Applicable |
| Colour | black/white |
| Product Dimensions | 33.3 x 12.7 x 20.7 cm; 1.9 kg |
| Item model number | NGHOBBYTUMBLER2 |
| Manufacturer recommended age | 8 years and up |
| Manufacturer | JMW Sales, Inc. |
| Country of Origin | USA |
| Item Weight | 1 kg 900 g |
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