This article covers the Canon version of this subject.  Click here for Wookieepedia's article on the Legends version of this subject. 

OnACanonArticleGoToLegends

Sorian crystals were a variety of kyber crystal. The crystals reflected light in a way that looked similar to fire. When used as a lightsaber crystal, sorian crystals produced a blade that would release a surge of power each time it came into contact with something.[1]

Sources

Notes and references