Lightsabers

"'Ideally, a Jedi took many months to construct a single perfect weapon that he or she would keep and use for a lifetime. Once you build it, the lightsaber will become your constant companion, your tool, and a ready means of defense.'  ―Luke Skywalker"

The lightsaber's were a common weapon throughout the galaxy, commonly used by force wielders. The lightsaber were commonly referred to as a laser sword, because of it's bright glowing blade that almost resembled a laser.

The lightsaber's color were determined by the blade user. If the person wielding the saber would have a broken, grief and dark mind the cyber crystal would crack and start to bleed. Leading the saber to have a red glow, commonly used by sith force wielders. The crystals were common on such planets as Illum, a crystal planet full of cyber crystals, leading it to become a highly fought over objective during the conflicts between the jedi and the sith.

A lightsaber was hard to construct on your own, sometimes taking months, even years to fully complete a perfect personal lightsaber. The lightsaber were more than a mere tool for the Jedi knights during the wars, it was like a companion. Leading many to never change a lightsaber thoughtout their lifespan.

There are also many different types of lightsabers such as a standard and curve-hilted saber (can be seen used by Darth Tyranus) or a cross guarded lightsaber that Kylo ren uses, his saber does also contain a cracked crystal which gives the saber that fiery look. It can be dangerous to have a cracked crystal for the saber user, it it bursts.