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Amazon.com: NATIONAL GEOGRAPHIC Rock Tumbler Kit - 3 Lb. Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, Kit Includes Rocks for Tumbling and Rock Polisher Grit, Rock Tumbler for Adults
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NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit- with 1 lb of Rough Gemstones, 4 Polishing Grits, Jewelry Fastenings and Detailed Guide- Educational Stem Toy - Walmart.com
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Amazon.com: NATIONAL GEOGRAPHIC Rock Tumbler Kit – Hobby Edition Includes Rough Gemstones, and 4 Polishing Grits, Great STEM Science Kit for Geology Enthusiasts, Rock Polisher for Kids and Adults : Toys & Games
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Rock Tumblers - Everything that you need for rock tumbling! | Rock tumbling, Polished stone, Gemstone colors
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