Sharpening stones are a way to sharpen metal blades such as knives, razors, axes, or scrapers to their peak performance. Sometimes they are referred to as honing stones or Whetstones. Sharpening stones come in many different shapes and sizes. Some are natural and some are synthetic. The natural sharpening stones are mined and come in different qualities depending on what part of the world it is in. People in the United States say that the best natural sharpening stones come from Arkansas, USA. The Arkansas stone supposedly leaves the blades smoother and sharper than other natural stones and even synthetic stones.