Oriadann was a planet located in the Outer Rim, and the twin of the planet Brazadann.[1]
Some time after the Destruction of Alderaan, Oriadann was blown up by the power of a Korendum. Suunfuus, an Ithorian scientist, gave a part of his cristal to the local population as an Energy source, but the brutal liberation of all its power was fatal to the planet.[1]
The destruction was generally attributed by the galactic population to the Galactic Empire, fearing a new superweapon, although he was not involved.
Behind the scenes
Oriadann was created by Christophe Debien and Patrick Bousquet for the ambiguously canon roleplaying scenario "La légende des cristaux" which appeared in the French magazine Casus Belli 76.
Sources
"La légende des cristaux" — Casus Belli 76 (First mentioned) (Unlicensed)