Firestones are a tool used to produce sparks and light fires. They can be found at most any general store.
You carefully examine some firestones...
Two chunks of firestone that can be struck together to produce sparks and light fires.
It is a tiny item, mainly made of firestone.
It could be used to light applicable items on fire.
Usage Syntax: light <item>
Note that the firestones do not need to be held in hand, but can simply be in an open worn container, such as a backpack or belt pouch. A hand will need to be free in order to temporarily retrieve the firestones, however.