Black Tourmaline is well known  for its remarkable healing properties. It is believed to possess strong protective energies that shield individuals from negative influences and psychic attacks. It is often used as a grounding stone, helping to stabilize and balance the body's energy. 
The shape of the crystal pyramid is believed to represent the connection between the physical and spiritual worlds, as the four sides of the pyramid represent the four elements (earth, air, fire, and water). A crystal pyramid is also believed to be a powerful tool for focusing energy, manifesting and for healing.