Lightsaber Crystal

A Lightsaber Crystal was a special stone used in the construction of a lightsaber blade. Depending on the crystal used, the blade can take on a variety of different properties. In some cases they can even become sentient weapons.

=Crystals=

Kyber
Kyber Crystals are special, rare Force Sensitive crystals that adapt to their wielder. Their properties and color shift depending on the influence of the Jedi or Sith wielding them. Despite their rarity, for a time they were the only crystal used in Lightsaber construction. There was a belief that their Force-Sensitive nature made them the only acceptable crystal to use, and made them inherently superior. Even the Sith adopted this belief despite the crystal's many downsides.

The Beniko Sith shunned the use of Kyber Crystals, believing them to be too fussy and inconvenient to use. As a result, the Jedi Order also shunned the use of Kyber Crystals.

Qixoni
A Qixoni crystal is an extremely dense gem formed in planets consumed by supernovas. They are difficult to find, and can usually be found in the Outer Rim black markets if they can be found anywhere at all. Their dense properties make an extremely stable and safe blade that could be given to Force-blind people in emergencies. The Qixoni crystal was always in a bright red hue and came in no other colors.

Darth Amorosa used a Qixoni crystal in her lightsaber.

Stygium
A Stygium crystal was a common type of crystal used in stealth technology as well as weapon and shield designs. When highly refined, however, it could be used for a lightsaber. The blade was less bright than typical lightsabers, and came in a dull shade of orange the majority of the time. It was ideal for Force Users who wanted to remain under cover, as it was less likely to be seen when used. It's technological application made it a favorite for Force Users who were good with technology, if only for symbolic reasons.

Rey Beniko used two Stygium crystals for her lightsabers.