National Geographic Professional Rock Tumbler Kit
AmazonNational Geographic

National Geographic Professional Rock Tumbler Kit

Drop in rough stones, close the lid, walk away — come back in about twelve days to gems. This quiet tumbler polishes raw stone into jewelry-counter quality, all for $85.

Price
~$85
Channel
Amazon
Listed
2026-10-10

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Load the barrel with rough rocks and grit, set the 12-day timer and let the tumbler do the rest; the included GemFoam and four grit stages take stones from dull to polished. The result is gemstones you can set into the included jewelry findings, or just keep as a jar of shiny rocks you made yourself. A slow-burn hobby that works while you forget about it.

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