Thames & Kosmos Rock Tumbler
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Turn rough stones into polished gems while learning about erosion, weathering and the rock cycle. Comes with a starter assortment of real rocks, including tiger's eye, aventurine and rose quartz, plus four polishing grits and jewelry settings for turning finished stones into accessories. The barrel is leak-proof and noise-reducing, holds over a pound of rock, and the built-in timer runs up to seven days. USB-C powered.
Ages 8+.
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