Any kyber crystal could be bled by a Force user, including one's own, for example, if they were a former light side practitioner and kept their lightsaber. However, some Sith believed that the proper method was to take a kyber crystal from a Jedi's lightsaber and bleed it.
To make a kyber crystal bleed, a Sith Lord takes a natural kyber crystal (regardless of its color) and corrupts it using the dark side of the Force. This process involves pouring all their hatred and pain into the crystal, which causes it to bleed and change.
Kyber crystals were sturdy enough to survive the violent explosion of a lightsaber's power grid, such as those caused by accidentally inverting the emitter matrix during the weapon's assembly.
Does bleeding a Kyber crystal make it more powerful in any way? Not inherently, no. As we are told by Master Yoda in the original trilogy, the Dark Side is not inherently more powerful - quicker, easier yes, but not more powerful by definition.
He headed to Mustafar, where he bled the lightsaber's crystal, turning it from green to red. Vader used Kirak Infil'a's lightsaber in conjunction with his corrupted, red kyber crystal in multiple conflicts, such as when he briefly fought the Grand Inquisitor and Jocasta Nu in the former Jedi Temple.
Like all lightsabers, the Kyber crystal within the Darksaber focuses the weapon's energy on producing its blade. However, the Darksaber's crystal and the gun have unique properties, resulting in their black coloration and distinct blade characteristics.
The crossguard blades allow Ren's saber to operate safely – his weapon is constructed around a dangerously flawed kyber crystal, which would be overloaded if not for the lateral plasma vents that create the quillons.
Ghostfire crystals were a type of rare and entirely transparent kyber crystal that grew from rocky foundations and formed precarious and nearly invisible spires of stone. They could be found on a handful of worlds in the Outer Rim Territories and most commonly appeared on mountain peaks.
After destroying the Jedi Temple in 28 ABY, Ren used the dark side of the Force to bleed his lightsaber's kyber crystal, changing the color of its plasma blade from blue to red.
It was possible to "heal" the effects of bleeding on a kyber crystal, by using the light side of the Force, thus changing the crystal's color again. The process typically resulted in a white crystal.
Kylo Ren quite liked the sinister crackle emitted by this distinctive lightsaber but, even though Star Wars sequel viewers never realized it, the use of a damaged kyber crystal potentially granted Kylo Ren's lightsaber unusual Force powers.
He also had a red kyber crystal that had been bled by a long-dead Sith. Dr. Cuata gave this crystal to Luke, asking him to purify it if he could. Unfortunately, Luke failed to do so, though he kept the crystal anyway.
The Prime Jedi was an individual who became the first Jedi to ever use the Force. The Prime Jedi was also the founder of the Jedi Order, which they established on the planet Ahch-To around 25,025 BBY.
In the construction of a Sith lightsaber, individuals partook in a process known as bleeding. By ways of the Force, they would pour negative emotions, such as rage, hate, fear, and pain into kyber crystals. The process would result in the crystals gaining a distinctive crimson or red hue.
In order to purify a corrupted kyber crystal, a Force-sensitive had to form a bond, not only with the crystal, but also with the darksider who had bled it. Only by empathizing with them, and understanding what led them to the dark side in the first place, could one undo the damage that they had done to the crystal.
During the tests, Bridger had to overcome his fear of abandonment, and in doing so was anonymously guided by Jedi Master Yoda, who communed with Bridger from afar. The boy passed his tests and was given a kyber crystal from within the temple, which signaled he was ready to construct his own lightsaber.
The fate of Luke Skywalker's old lightsaber appeared to be symbolic of his philosophy; it was shattered in a Force tug-of-war between Rey and Kylo Ren. Even its Kyber Crystal was broken. And yet, in spite of that, Rey succeeded in repairing the lightsaber in Star Wars: The Rise of Skywalker.
Ahsoka's white lightsabers first appeared in the TV episode "Fire Across the Galaxy", the season one finale for Star Wars Rebels. According to Dave Filoni, one of the show's creators, the lightsaber blades are white to reflect her non-affiliation with the Jedi or Sith.
The purple color itself is considered the most powerful lightsaber color in the Star Wars galaxy. A very few Jedis ever wielded a lightsaber of this color. The only two known people to ever wield a purple color lightsaber are Mace Windu and Darth Revan from the past.
Traditionally, yellow lightsabers are associated with Jedi Sentinels, who balance their combat skills with a strong focus on exploration and practical application of the Force. This choice reflects Rey's well-rounded training and her determination to maintain balance in the Force.
Why Do You Think Kylo Ren Was So Obsessed With Rey? He saw her as a useful tool for his rise to power. He was intrigued by the mystery surrounding her. He wanted closure for his defeat at her hands.
Why do some Jedi hold their lightsabers backwards?
The inverted grip, which results in the lightsaber being held behind the back, was specifically used to perform sweeping attacks, but many Jedi would argue that the user leaving their front exposed is contrary to the defensive aims of the Shien variant and Form V.
