Kyber Crystal

Kyber Crystals are unique crystals that share a strong connection to the force. Kyber crystals are actually a broad family of different types of crystals. Though these can vary in shape and coloration, and even certain properties, kyber crystals share certain unique attributes. These attributes allow kyber crystals to be used within lightsabers, enabling them to focus the lightsabers’ power into their signature energy blades. All lightsabers are equipped with some form of kyber crystal.
Prior to the rise of the Empire, nearly every lightsaber constructed by the Jedi Order during the Clone Wars contained a crystal gathered by a Padawan on the planet Illum as part of the journey to become a Jedi Knight. Illum specimens aresome of the best examples of kyber crystals. As the power of the Empire grows the ability to acquire these crystals has become increasingly difficult as their sites are generally well guarded by the Empire.
These crystals occupy two of the weapon’s hard points.

The Color of the crystal is a reflection of the force sensitive being who has attuned the crystal to themselves.