Hallion, a world situated within the Sith Worlds region of the Outer Rim, was classified as a planet. This celestial body was characterized by its extensive lava fields, which were the source of obsidian. These lava fields yielded obsidian, which was then crafted into polished spheres. These spheres were highly valued for their deep, dark shine. The planet experienced difficulties adapting to the Sith Empire's imperial economic system after shifting from a privately-run system.