Mace Windu ' s lightsaber Mace Windu ' s lightsaber was a Jedi weapon constructed by Jedi Master Mace Windu following his appointment as a senior member of the Jedi High Council . One of the most distinctive lightsabers in the Jedi Order due to its amethyst plasma blade , Windu would carry this weapon into battle on multiple occasions during the Clone Wars in which he served as a Jedi General in the Grand Army of the Republic . The lightsaber was ultimately lost during a confrontation between Windu and the Sith Lord Darth Sidious , who then killed the Jedi Order ' s champion through the use of Force lightning . Description . As one of the most notable members of the Jedi Order , Jedi Master Mace Windu carried a lightsaber distinguished by its unique amethyst plasma blade . Its distinctive color served as warning to adversaries that the Jedi Order ' s greatest champion was ready to fight . Serving as his second lightsaber , Windu constructed it after many years of experience and used the highest standards to make a superior weapon . In addition to a specially designed handgrip , the lightsaber ' s electrum finish indicated Windu ' s status as a senior member of the Jedi High Council . History . At the height of the Separatist Crisis in 22 BBY , Mace Windu led a Jedi assault team to the Separatist world of Geonosis in an effort to rescue the Jedi Knight Obi - Wan Kenobi , resulting in a confrontation between the Jedi and a force of battle droid s . During the battle , Windu was confronted by Jango Fett , a bounty hunter employed by the Separatist leader Count Dooku . The expert swordsman calmly deflected Fett ' s blaster shots and killed the mercenary by severing his armored head with one slash of his lightsaber . Afterward , Windu carried his lightsaber into the main battle where he led the newly - formed clone army of the Galactic Republic against the Separatist Droid Army . Following the Battle of Geonosis , Windu helped to oversee the overall war effort as a Jedi General of the Grand Army of the Republic . He also took his lightsaber into battle on some occasions , helping to liberate Ryloth and defend Malastare against Separatist forces . After three years of war however , the Jedi discovered that the Republic ' s leader , Supreme Chancellor Sheev Palpatine , was in fact Darth Sidious — the Dark Lord of the Sith who conspired to destroy the Jedi in order to take over the galaxy . Knowing that the Jedi Order ' s fate hung in the balance , Windu attempted to arrest the chancellor before his plot came to fruition . Although the Sith Lord succeeded in killing three of Windu ' s colleagues in an ensuing lightsaber duel , the Jedi Master ultimately prevailed and disarmed Sidious of his weapon . Refusing to accept defeat , Sidious attacked Windu with a blast of Force lightning , forcing the Jedi Master to block the lightning with his lightsaber . As a result , the lightning was redirected to its source , leaving Sidious ' face disfigured in the process . Before he could strike down the Sith Lord , the Jedi Knight Anakin Skywalker used his own weapon to sever Windu ' s hand in order to save Sidious ' life . With Windu injured by his former ally and bereft of his lightsaber , Sidious renewed his attack by unleashing torrent of Force lightning , resulting in the death of the Jedi Order ' s great champion .