TXP polish is sold in one pound packages and is a micron sized alumina oxide polish. TXP has been proven to be the best all around tumble polish for both rotary and vibratory tumblers. It is an excellent polish for tumbling most rock, stone or semi-precious gemstone material (agates, jasper, obsidian, etc.) using rotary/barrel tumblers or vibratory tumblers. Information has been related recently that a reduced amount of the TXP polish will produce faster results. Try one tablespoon per 10 pounds of rock and separating material or reduce accordingly to the amount of rock in your rotary tumbler. (For instance for a three pound tumbler, try one teaspoon of TXP polish per load.) Remember to keep a notebook on the amount of grit and polishing steps and what works for your tumbler and materials. Obsidian, onyx, woods, and agates, each will have a different tumbling process for fast, good results. For more information on tumbling with rotary or barrel tumblers or with vibratory tumblers, please see related articles listed under Lapidary Tips.