Clear Quartz is known as the "master healer" and will amplify energy and thought. It draws off negative energy of all kinds, neutralising background radiation, including electromagnetic smog or petrochemical emanations. It is composed of silicon and oxygen (silicon dioxide). On the physical level it stimulates the immune system and brings the body into balance. On the psychological level Clear Quartz produces a force field of healing negative ions while clearing the surroundings of positive ions, protecting the aura.