Energy Crystals

Appearance
An Energy Crystal always looks, as the name suggest, like a crystal. It's unknown what they're actually made out of, but it's said that they are completely solid forms of energy. The most common color is white, and the least common is black.

History
Believed to have been put together by storing massive amounts of energy gathered by True Mages, any given item would eventually turn into a crystalized material. When the True Mages put in what would seem like obscene amount of energy by today's standards, it would begin to become a shape that resembles less of what it was, and more of a basic crystal.