New Advanced Formula Honing Solution is a specially formulated non-petroleum based sharpening fluid with built-in cleaning agents along with rust / corrosion inhibitors. These special properties help keep your stone cleaner. They also assist in preventing oxidation and rusting of any steel particles that are left on your stone.Since Smith s Honing Solution is a non-petroleum based product it can be used on both your Natural Arkansas Stones as well as your Diamond sharpeners.