Synthetic lightsaber crystal

A Synthetic lightsaber crystal, commonly referred to as a Synth-crystal, was a type of lightsaber crystal that was artificially created, rather than naturally formed by geological processes. Due to the methods used in their creation, they were often formed with a red coloration, though they could be made with any color through special manipulations of either the creation process or the crystal itself, often through the Force, such as the green synth-crystal that powered Luke Skywalker's second lightsaber.

Text and facts from the “Synthetic lightsaber crystal/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.