The Blackwing Crystal was an unusual lightsaber crystal. When used in a lightsaber, it produced a dark, smokey ash blade. There was a collection of these crystals in the caves of the Quarantine Zone on Dathomir, which was guarded by the Undead rancor. These crystals may have been a product of the Imperial bioweapons Project I71A Codenamed "Blackwing"
- Star Wars Galaxies: An Empire Divided (First appearance)