Celestium is the metal native to Mount Celestia, the plane of law and good.

Celestium is found only on the outer plane of Mount Celestia in its native ore form. Once refined, it is a powerful compound. Though preferred construction lies in armor, due to its defensive nature, weapons of Celestium can be found periodically. The metal itself is bluish-white marble in appearance. Quite enchantable, most weapons made of this metal are enchanted somehow to make up for their offensive deficiencies. Non-good beings possessing this metal can expect to be sought out for questioning by powerful forces of good.