Tear of Neptune

The Tear of Neptune is an S-Ranked Gem that is only found on Planet Lir. Touted as the purest power gem in the universe, and not just for its own purity of energy. It spreads that virtuousness wherever it goes, effecting everyone it comes in contact with, sharing its untainted power.

Information
The gems primary function it to cleans and purify another power gem’s energy, and effectively improve its overall quality. However, the process required a great deal of sustained energy output. The gem itself couldn’t release energy, only take it into itself. And with the better power gems already having very few impurities – true for most of the known s-ranked gems. The Tear had no positive function, thus making it an unwanted gem.