Rock tumbling "grit" is a silicon carbide powder with a Mohs hardness of 9.25. That is much harder than the types of rocks that are commonly tumbled. Coarse grit is used to shape the rocks, then progressively finer grits are used to smooth their surface and prepare them for polishing.
Most people who have been tumbling for a while have a favorite polish and use it for most of their work. Others experiment with different polishes, looking for a polish that will produce the highest possible luster on a stubborn material. We use TXP aluminum oxide polish for almost all of our tumble polishing.
"Tumbler rough" is the name used for rock that is suitable for use in a rock tumbler. Agate, jasper, quartz and many other rocks can be used in a tumbler to produce tumbled stones. We offer several types of rough that are sized for the beginner (marked with an "E" for "Easy") to produce great tumbled stones.
Rock tumbling media can significantly improve the results of your tumbling. Tumbling media has three basic functions: 1) Deliver grit to hard-to-reach rock surfaces; 2) A filler when tumbling a partial load of rock; 3) To cushion fragile rock materials during the tumbling process.
We offer replacement parts for Thumler's Tumblers and Lot-O-Tumblers. For other brands and vintage tumblers, please read this article. We also offer barrels and motors for the above-mentioned tumblers.
Here are three of the most information-packed books for rock tumbling and gemstone information that we could find. We also carry many rockhounding tools that may come in handy on your next rockhounding adventure.