Rock tumbling "grit" is a silicon carbide powder 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 found a personal favorite polish and use it for most of their work. Others like to 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 all of our tumbling.
"Tumbler rough" is the name used for rock that is suitable for use in a rock tumbler. Agates, jaspers, quartz and many other rocks can be processed in a tumbler to produce rounded gemstones with a very high polish. We offer several types of rough that are sized for the beginner to produce great finished 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 a great selection of rock, gem and mineral books and maps. There are rockhounding books, gem trail books and gold, gem and mineral maps for many western states. Also available are fee mining guides for eastern and western U.S. along with regional gem and mineral guides for the northeast, southeast, northwest and southwest U.S. We also have general books for learning about rocks, minerals and gemstones.