Metaphysical Properties:

1. Grounding and Protection: Black Tourmaline is renowned for its grounding properties, helping to anchor and stabilize individuals. It is often used as a protective stone, deflecting and repelling negative energies, providing a sense of security.

2. Electromagnetic Field (EMF) Protection: Black Tourmaline is believed to have the ability to absorb and neutralize electromagnetic radiation from electronic devices. It is often placed near computers or other electronic equipment for this purpose.

3. Psychic Shield: Black Tourmaline is associated with creating a protective shield against psychic attacks and negative influences. It is believed to enhance one's psychic abilities while safeguarding against unwanted energies.

Geological Description: Black Tourmaline is a mineral that belongs to the tourmaline group, which is a complex boron and aluminum silicate. It often forms prismatic crystals and is found in a variety of geological settings, including granitic pegmatites, metamorphic rocks, and in association with hydrothermal veins. The black color is typically caused by the presence of iron.

Birthstone: Black Tourmaline is not traditionally associated with a specific birthstone month in the standard birthstone charts. It is valued more for its protective and grounding properties than for its use as a birthstone.

Chakra Associations: Black Tourmaline is primarily associated with the root chakra, located at the base of the spine. The root chakra is linked to grounding, stability, and a sense of security. Black Tourmaline's energy is believed to resonate with the root chakra, providing a strong foundation and helping individuals connect with the earth's energies for stability and balance.