Christophsis was a crystalline world in the Outer Rim Territories' Savareen sector. Orbited by a single moon amongst the mineral-rich asteroids of the Christoph system, Christophsis was for a time a target for stray rocks because of its closeness to various asteroid belts, but the planet was refined by Tepasi nobles around 600 N.E, and later by the world's native Christophsian inhabitants, who originated as Humans from the Core. Christophsis was eventually protected from the asteroids and transformed into the center of a mining hub. By the time of the Clone Wars, the Christophsians ruled their homeworld in a mercantile oligarchy and had established Chaleydonia, also known as Crystal City, as their planet's capital. Various species also immigrated to the world, including Rodians, Ferengi, and lower-caste Humans who came to serve the Christophsians. The Great Battle of Christophsis took place here.

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