NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit - Includes Rough Gemstones, 4 Polishing Grits, Jewelry Fastenings, Learning Guide, Great Stem Science KitLearn about the exciting hobby of rock tumbling with National Geographic!
Rock tumbling is tons of fun and a great way to start a beautiful rock collection.
This set includes all the accessories you
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This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.