A cortosis shield was a piece of protective equipment created from cortosis ore. It came in many different varieties, like armguards. Since the impurities of the ore were removed, they were as good at repelling lightsabers as cortosis weave armor. Like cortosis weave, a lightsaber impact against the substance would shut off a lightsaber. The lightsaber would then have to restart in order for it to work properly.
- Darth Plagueis (Mentioned only)
- Jedi Council: Acts of War 1 (First appearance)
- Jedi Council: Acts of War 2
- Jedi Council: Acts of War 3
- Star Wars: The Force Unleashed game