Syntonium crystalCanonLegendsInfinities Crystals of syntonium were extracted from the Cirus II planet through the process of mining.AppearancesStar Wars: The Old Republic: Knights of the Eternal Throne (Unkown)Unkown Unknown Tales from Mos Eisley: Mostly Automatic — Star Wars Galaxy Magazine 3 (Mentioned only) (Unkown)Unkown Unknown
