Rathalayan firestone

Rathalayan Firestones are akin to geodes in size and shape. What makes them unique is their inner crystal formations. They are quite similar in make up to crystals that Jedi utilize in the light sabers however they are not atomically strong enough nor stable enough to be used in such ways.

When two or more stones are placed in close enough proximity to each other the crystals begin to vibrate. This vibration creates heat nad therefore the name came into being.