Darth Clavis was encouraged that his lightsabers have a number of lightsaber Crystals for many reasons, if not for their looks then he had them for the power they gave. The crystals they had included: * "Crystals of Fallen Celestials" - an pair of blood red lightsaber crystal created with Sith alchemy by a descendant of fallen Celestial blood, Adriana Lai, who created these crystals shortly after Stefan Thomas was left at the Corellian Orphanage in preparations for his usefulness to her son. This crystal was able to call upon the Force at extreme levels and in a way that lessened the chance of Force exhaustion from the draining of the user's Personal Force reservoir. * "Sulphur Crystals" - The Sulphur Crystal was a large milky yellow crystal used as a Focusing Crystal in a Lightsaber