The Rur Crystal was a distinctive crystal that functioned as the central computer processing unit for the Ordu Aspectu's ancient space station and fortress, known as the Citadel of Rur. Subsequently, this crystal became the host for the artificial intelligence of Eternal Rur, representing the tainted mind of Rur, who led the Ordu Aspectu. In 0 ABY, during the twilight of the Ordu Aspectu, Doctor Chelli Aphra acquired this crystal. Ultimately, the crystal ended up in the possession of Emperor Palpatine, who placed it within his personal collection.