Artifacts

About
Artifact or Relics are items found on The Abyss by Delvers during their expeditions. While low class artifacts that have little to no use, the higher the grade, the more extraordinary its effects are. They're believed to be leftovers from an ancient civilization, and their functioning can't be comprehended by modern technology, let alone imitated.

Special Grade Artifact
The most valuable class that can be found. These are items that can change the world and disrupt the balance of power between nations. Retrieving a single one to the surface can guarantee a prosperous future for a whole city or vastly increase the military potential of a country. According to Jiruo, a Special Grade Artifact's value is so large that it can't be measured. Because these artifacts are so valuable, they're the only artifacts that white whistles are not allowed to keep for their own personal use.