💎 Polish your passion, rock your STEM skills!
The Blue Marble National Geographic Hobby Rock Tumbler Kit is a durable, battery-powered rock polisher designed for kids and adults. Featuring a leakproof, noise-reduced barrel that operates 75% quieter than typical models, it includes all essentials—four polishing grits, a sifter, a learning guide, and 2.5 pounds of raw gemstones. With simple one-touch controls and an automatic shutoff timer, this award-winning STEM kit offers an engaging, educational, and mess-free way to create sparkling gemstones at home.
| Item Weight | 8 Pounds |
| Item Dimensions | 14.96 x 11.8 x 6.7 inches |
| Size | Small, Medium |
| Material Type | Plastic, Rubber |
| Color | Multicolor |
| Theme | Science |
| Operation Mode | Manual |
| Educational Objective | STEM |
| Power Source | battery |
| Number of Players | 1 |
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