Star of the Champion is one of the Materials in Conan Exiles.
Description
So you could steal him the only thing he would never give you -- the ring with the jewel men call the Star of Khorala -- the star stolen from the queen of Ophir, who would pay a roomful of gold for its return. He would not give it to you willingly, because he knew that it holds a magic which, when properly controlled, will enslave the hearts of any of the opposite sex. - Shadow in Zamboula
The Star of the Champion is a gem of unsurpassed beauty - glowing with a white light that sets the world to shimmering.
Once, int he ancient past, it was awarded to Tyros the Deathdringer for becoming the campion of the Gian-kings arena.
In hia final battle, he was to fight the mightiest dragon created by the Giant-kings, a magnificent creature of enormous stature. Tyros defeated the beast, but in his victory, he was the death of something noble and he wept. He pinned that Star of the Champion tot the corpse of the creature - and the might beast was buried right there, beneath the sands of the arena.
Later, when Tyros was cursed with immortality, the dragon inherited the curse and rose again to stalk the arena.
This is one of the artefact required to create the keystone that can be used to remove the slave bracelet.
Source
Undead Dragon In the Arena.