National Geographic Rock Tumbler, Card Game and Specimen Kit
National Geographic Rock Tumbler, Card Game and Specimen Kit
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National Geographic Rock Tumbler, Card Game and Specimen Kit

Key item features

  • Complete Kit: The set includes a high-quality tumbling machine, upgraded leak-proof tumbling barrel, and a rock strainer.
  • Gemstone Variety: Comes with a bag of rough gemstones and a bag of assorted polished gemstones.
  • Polishing Supplies: Includes four bags of polishing grits for transforming rough rocks into smooth, polished gemstones.
  • Jewelry Settings: Features five jewelry settings to turn favorite gems into wearable pieces of art.
  • Educational Cards: Deck of 52 playing/trivia cards with images of gemstones and cool science facts.
  • Learning Guides: Includes a rock tumbler learning guide with instructions and a card game instruction sheet.
  • STEM Adventure: Provides an engaging and educational experience in geology for kids.
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Starting from $52.99

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4.2 out of 5 stars
stars28 ratings16 reviews
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Showing 1-3 of 16 reviews

Feb 21, 2026
leslie
Sold and shipped byTyeztoyz
5 out of 5 stars review

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National Geographic Rock Tumbler

Christmas gift for 9-year-old grandson, he's become quite the rockhound this past year. Heads up: if you're expecting quick results, think twice, there are phases to go thru and it isn't quick. We found out, though, that watching the rocks transition, my grandson had ZERO impatience. Told him that making polished stones takes time and the beautiful rocks when done would be worth the wait. That's exactly what happened and it was great watching him really exercise his patience, good learning skill. Added benefit? My daughter worried the tumbling noise would keep her son awake. She moved it to her room at nights and she's had the best sleep EVER, she loved the white noise for sleeping! This is a win-win at their house. Bonus: Grandma's gifts are "so cool" lol.

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Helpful?5JSV3FC6T7B5653982064
Aug 9, 2025
Terri
Sold and shipped byTyeztoyz
5 out of 5 stars review

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works great but cost was high

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Dec 23, 2025
maureen
Sold and shipped byTyeztoyz
5 out of 5 stars review

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Real quality

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Helpful?5JSV3FC6T7B5653982064