"A godly aura has blessed the world's caverns."
Auric Ore is a post-Moon Lord ore found in the Cavern layer after Jungle Dragon, Yharon has been defeated. Its sole use is to craft Auric Tesla Bars, which are used in creating some of the most powerful gear in the Calamity Mod. It requires at least a Blossom Pickaxe to mine.
Unlike most other ores, Auric Ore spawns in enormous clusters. The largest veins can easily have 150 blocks of ore or more; to compensate, Auric Tesla Bars require a vastly increased number of Auric Ore to craft compared to other bars.