Replenish your rock tumbler with this Rock Tumbler Refill Kit. This kit includes a half-pound of rough semi-precious stones (including amethyst, jasper, and agate), two grades of polishing grit, final polish, glue, and jewelry mounting hardware. It has everything you need (aside from the rock tumbler) to make polished gemstones in 3-4 weeks. Let the fun begin!
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