They are pyramids carved artisanally in black tourmaline or chorlo of a deep black color.
This powerful pyramide is made of tourmaline. Tourmaline has purifying and grounding qualities. It also protects from all kinds of negative energy and radiation.
The height of the piece can vary when dealing with handcrafted pieces.
According to gemoteraphy, black tourmaline can neutralize the radiations emitted by electronic devices. It is widely used as a protective stone, as it discharges negative energies into the earth. It also increases intuition and facilitates meditation.