Selecting the Right Sharpening Stone for Your Needs Selecting a sharpening stone can be difficult unless you understand the differences in stone materials. It depends on the condition and quality of your knife. Water stones, oil stones, and diamond stones… If you’ve purchased a sharpening stone that comes with a base, you can use that to hold the stone in place. So let’s try to clarify some of the confusion and simplify the process. One thing to keep in mind with all sharpening stones is that the Japanese grit system is different from the American grit system. So when I talk about an 8,000-grit water stone, it’s different from a 1,200-grit diamond stone. Holding the knife at the correct angle (20 degrees for Western knives), draw the knife across the stone … If yours don’t have a base, place the stone on a kitchen towel to hold it in place. You will need rough stones if the knife is too dull or rusty. Choosing the right sharpening stone is very important. This short video will walk you through the advantages and disadvantages of various sharpening stones so you can find the best stone … Similar to the other types of stones, diamond stones come in different grits. So here’s how to choose a sharpening stone, Part 1 of 4: It may be confusing when trying to choose which sharpening stone system to use.