Aura Gems

Aura gems are rare crystals only found on certain planets and in rare asteroids floating through space. They come in all colors, shapes, and sizes. Some people believe they are made of condensed, solidified magical energy. If someone with an aura crystal focuses strongly enough on any desire, their wish will magically come true. However, each time an aura gem is used, it shrinks a little and gradually turns to black. Once the energy has been spent, they are little more than inert boring rocks.