We tumble one or two barrels of every rough that we sell. If we can't make it shine, we don't sell it.
To help our customer achieve good results and learn about tumbling different materials, we share our methods and the rationale behind them on every page where our rough is sold. We call these "rock tumbling recipes". We hope that you find them helpful. You can learn more about them here.
Listed below are links to the types of rough that we currently offer for sale. At the bottom of the page, we link to recipes for roughs we have offered in the past.
Hobart M. King has decades of rock tumbling experience and writes most of the articles on RockTumbler.com. He has a PhD in geology and is a GIA graduate gemologist. He also writes the articles about rocks, minerals and gems on Geology.com.