Gray healing crystals evoke the same energies as black stones, but tend to be slightly more gentle. They are grounding, protective and calming. The color gray also encourages complex thinking and mature emotional intelligence. Gray minerals help us to think clearly and not get bogged down in rigid beliefs or emotional reactions. Gray healing crystals gently remind us to have faith in our own abilities to take care of ourselves and our world. Colors are perceived on a very deep level which goes far beyond the simple mechanics of seeing. Colors are not simply constructs of mere physics, but are also capable of making us feel emotions. Color theorists and marketing executives have long known that some colors energize, while others radiate a sense of serenity. The colors we surround ourselves with can dramatically affect our thoughts, choices, and general mood. When selecting healing crystals the color itself should be consciously and carefully considered in addition to all the other aspects of the stone.