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💎 Transform Rough Rocks into Polished Gems & STEM Brilliance!
The NATIONAL GEOGRAPHIC Starter Rock Tumbler Kit is a premium STEM science set designed for geology enthusiasts aged 8 and up. Featuring a durable metal and rubber-lined barrel, it uses a 4-stage silicon carbide polishing grit system to transform rough gemstones into beautifully polished stones. The kit includes rough gems, jewelry fastenings, and a detailed learning guide, making it perfect for hands-on educational fun that sharpens critical thinking and sorting skills. Backed by a 1-year warranty, this kit blends science, creativity, and craftsmanship in one engaging package.
| ASIN | B01I56RV0C |
| Age Range Description | 8 years and up |
| Art Craft Kit Type | rock tumbling |
| Best Sellers Rank | 37,098 in Toys & Games ( See Top 100 in Toys & Games ) 141 in Glassware Tumblers 218 in Model Building Accessories, Hardware & Tools 385 in Educational Science Kits |
| Brand Name | Blue Marble |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.2 4.2 out of 5 stars (10,856) |
| Global Trade Identification Number | 00816448020391 |
| Included Components | Rock Tumbler, Leak-proof, Rubber-lined Tumbler Barrel, ½ Pound of Stones, Four Levels of Grit, 5 Jewelry Fastenings |
| Item Dimensions | 27.9 x 13.2 x 30.5 centimetres |
| Item Highlight | 227 g Rough Rocks, Rock Tumbler Grit, 5 Jewellery Fastenings, Leak-Proof Tumbler, Rock Polishing, Geology Activity |
| Item Type Name | Fastenings & Detailed Learning Guide - Great Stem Science Kit For Mineralogy & Geology Enthusiasts |
| Item Weight | 1.9 Kilograms |
| Manufacturer | JMW Sales, Inc. |
| Manufacturer Part Number | NGTUMBLER2 |
| Material Type | Plastic |
| Model Name | Starter Rock Tumbler Kit - Complete Rock Polisher Kit, |
| Model Number | NGTUMBLER2 |
| Number of Packs | 1 |
| Number of Pieces | 30 |
| Product Style | Modern |
| Product Warranty | 1 year warranty. |
| Seasons | All Seasons |
| Set Name | Starter Kit |
| Size | 1 Count (Pack of 1) |
| Special Features | Leak Proof |
| Subject Character | Rock Tumbling & Gemstone Creation |
| Theme | Geology - Rock Polishing |
| UPC | 816448020391 |
| Unit Count | 1.0 count |
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