Crystals have the ability to hold and emit energy vibrations. They affect our electro-magnetic energy fields or subtle bodies which surround and permeate the physical body. These include the etheric, emotional and mental bodies, to name but a few, which are collectively called the aura. Crystals absorb, focus, direct and diffuse our energy fields to enable a diseased or out of balance body to find it's natural energetic rhythm once again. Appropriate crystals can be placed on the seven main chakras to maintain balance in our bodies. These chakras link the subtle energy fields of our aura with our emotions, glands, organs, physical body parts and subtle and physical circulatory flows. Different crystals have their own vibrational energies and can affect our own energy systems in different ways.