Dooku's lightsaber

"It is obvious that this contest cannot be decided by our knowledge of the Force, but by our skills with a lightsaber."

- Dooku to Yoda, during their confrontation on Geonosis

Dooku's lightsaber was the personal, handcrafted Sith lightsaber of Count Dooku, a former Jedi Master. After assuming the identity of Darth Tyranus as a Sith Lord in secret, Dooku built his lightsaber with a distinguished, curved hilt to use in combat, having considered himself a sophisticated duelist. The Sith Lord also used a Sith crystal to produce the red blade of his weapon, as was the tradition for how a Sith crafted their lightsabers.

Built sometime prior to the false war Darth Tyranus and his Sith Master Darth Sidious orchestrated – the Clone Wars – the Sith Lord carried his weapon for a number of years during the conflict, using it throughout numerous battles and duels. The Sith Lord was a renowned duelist and his power was recognized by those in the Jedi Order, including Tyranus' former Jedi master, Yoda. Throughout the Clone Wars, Tyranus also used his lightsaber to train at least two Sith apprentices, Asajj Ventress and Savage Opress, and the cyborg Grievous in lightsaber combat.

Near the end of the Clone Wars, Dooku dueled against Obi-Wan Kenobi and Anakin Skywalker – two Jedi Knights he had faced on multiple occasions beforehand – in what would be his final bout. Skywalker defeated Dooku in combat and, in the end, used Dooku's own lightsaber to behead the Sith Lord. The weapon was thusly destroyed once the Invisible Hand, the starship on which Dooku was defeated, met its end.