Rough Sharpening Stone

Rough Sharpening Stones are created by Blacksmiths and will sharpen a sword, axe, dagger, or polearm to perform more damage.

Source
Rough Sharpening Stones are crafted by Blacksmiths with a skill level of 1.

The components are:
 * 1 Rough Stone

The plans are taught by the Blacksmithing trainer.