Uraj

Uraj is the name of a powerful psionic crystal in the fictional StarCraft universe. It is violet in color and possesses the energy of the Khala.

The Uraj crystal was created before or during the Aeon of Strife, probably by the Protoss. It was located in the Protoss colony of Khyrador, now called Braxis.

During the chaos at the end of the Aeon of Strife, it was abandoned on Khyrador. Later, unsuspecting Terrans colonized the world, calling it Braxis. They studied the crystal in a military research facility.

During StarCraft Episode IV, Shakuras, homeworld of the Dark Templar, was overrun with Zerg. In order to cleanse this infestation, the Xel'Naga Temple on the planet needed to be activated, but it required two crystals, the Uraj and the Khalis, to do so. Raszagal ordered her Protoss warriors to let nothing stand in their way in order to acquire the crystals.

Artanis, Zeratul and Infested Kerrigan led the Protoss forces to Braxis in order to retrieve the crystal. Kerrigan personally led the forces to the crystal, defeating the Terran Dominion forces which stood in her way.

On Shakuras, Artanis, a follower of the Khala, carried the Uraj to the Xel'Naga Temple in order to activate it. He was successful, scouring the Zerg from the planet.