A memory crystal was a device used for the storing of information.
One such crystal, the Kyber crystal, was in the possession of the Jedi Master Bolla Ropal and contained a list of potentially Force-sensitive infants. It was highly valuable to the Jedi Order as it contained information crucial to the future of the Order. The Kyber crystal was stolen by the Duros bounty hunter Cad Bane at the behest of Sith Lord Darth Sidious.
- Star Wars: The Clone Wars – "Holocron Heist" (Mentioned only)
- Star Wars: The Clone Wars – "Cargo of Doom" (First appearance)
- Star Wars: The Clone Wars: Visual Guide Ultimate Battles (First mentioned)
- Star Wars: The Clone Wars: The Complete Season Two