The aura shows us many things that can be useful in our development of our spiritual path, it can also show health imbalances. Everyone's energy field works in exactly the same way, energy comes in from the universal energy field to feed our physical form, what we do with that energy when it reaches our field of energy makes us unique.
Energy comes into the field on the left hand side, the spleen, with the etheric body distributing it throughout the rest of the body. The right hand side of the aura shows how we are projecting the energy. The centre of the aura shows who we truly are, and the energy above us is what is available to us, our potential.
The energy in our energy field is taken into the body through seven main energy centres, (chakras) the energy centres work on all levels of our being to interpret our psychological and metabolic state. Because energy is vibration and has frequency we can change it and bring about harmony, to do this we can use crystals.