Description
BLACK TOURMALINE is a very powerful spiritual grounding stone that protects against negativity of all kinds. It sucks up any negativity it encounters. However, it does not absorb negative energy. It actually transmutes negative energy into positive energy.

Details:
Black Tourmaline is part of the Tourmaline family.

It is also known as Schorl and is a style of silicate crystal. It is commonly found in trigonal crystal systems and is made up of Sodium Iron Aluminum Borate Silicate