Black tourmaline is sometimes known as the wizard stone, because it has been used in magical practices since ancient times. It is a protective stone, often worn to guard against negativity, demanding people, hostile entities and geopathic stress. It eases tension, especially in the home and can protect against electromagnetic fields. Use black tourmaline during meditation to find a creative way through problems. It is helpful in developing intuition and grounding you to the earth, releasing negative energies that result in restlessness, irritability and nervousness.Place a piece of black tourmalinenear a nervous pets' bed to help it feel less frightened and skittish. Black tourmaline is very helpful after trauma, especially sexual assault or domestic violence.