Kyber crystal

Kyber crystals are rare, Force-attuned crystals that grew in nature and are found on scattered planets across the galaxy. They are used by the Jedi and the Sith in the construction of their Lightsabers.

These crystals were all believe to have been destroy in the Great Jedi Purge, however, there are still several kyber crystals that still exists. Some Sith prefer to use Synthetic crystals, (artificially created lightsaber crystals) to power their lightsabers.