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NATIONAL GEOGRAPHIC Hobby Rock Tumbler Kit – Includes Rough Gemstones, 4 Polishing Grits, Jewelry Fastenings, Learning Guide, Great Stem Science Kit

CREATE YOUR OWN GEMSTONES – Make any kind of rock shimmer as well as gloss day-to-day rocks right into spectacular gems! The leakproof rubber barrel lowers noise, making it 75% quieter than various other plastic versions. Makes an excellent present for ladies and also boys!EASY TO USE

— One-touch setups and also straightforward directions make rock toppling enjoyable and also simple.

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