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Overview
Transform rough stones into dazzling gems with the National Geographic Rock Tumbler Grit and Polish Refill Kit. This comprehensive 4-stage set includes high-quality silicon caroffere grit that delivers a brilliant polish to up to 20 lbs. of rocks, gemstones, and glass. Whether you're a seasoned rockhound or just starting your tumbling journey, this kit provides everything you need for professional-grade results at home.
Developed by Blue Marble, an award-winning brand recognized for educational and creative products, this refill kit is an Amazon exclusive. It comes with a U.S.-based support team to ensure a stellar experience from start to finish.
Key Features
- Brand : Blue Marble
- Sub Brand : NATIONAL GEOGRAPHIC
- Material Type : Silicone
- Color : Black
- Item Dimensions : 5.5 x 5.5 x 4.25 inches
- Item Weight : 1.78 kg
- Model Number : NGBULKGRIT
- Number of Packs : 4
Highlights
- ✓ Achieve a mirror-like polish on up to 20 lbs. of rocks with four precisely graded stages of silicon caroffere grit.
- ✓ Universal compatibility – works with all rock tumblers, making it a versatile addition to your workshop.
- ✓ Easy measuring and storage with wide-mouth, screw-top containers that keep grit secure and mess-free.
- ✓ Trusted quality from Blue Marble, winner of the Toy of the Year Award, ensuring educational and creative value.
Usage
Perfect for hobbyists, educators, and families, this kit simplifies the rock tumbling process. Follow the included instructions to load your tumbler with rough rocks and the coarse grit for initial shaping, then progress through the finer stages for smoothing, pre-polishing, and final polish. Ideal for STEM learning and creative projects.
In the Box
- 4 stages of rock polishing grit
- 10 mL grit scoop
- Rock tumbling instructions
