The Smithsonian Rock Tumbler is much more than a rock polisher It can change rough stones into beautiful high luster gemstones Kids will make exciting jewelry with the settings included Contains tumbling machine with heavy duty motor, rough semiprecious stones such as amethyst, jasper and agate grit, polish, jewelry settings, glue and instruction manual Tumbler Refill Kit includes additional stones, grit, polish and jewelry settings Ages 10+
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