This is a natural piece of Black Tourmaline with mica, also known as Schorl. The bottom side is cut so it stands upright, with natural and rough sides and on the top.
Black Tourmaline is thought of as a protective stone which repels, absorbs, and blocks negative frequencies and energies. Through absorbing negativity, this stone can prevent unwanted energy in your home. It is said to purify negative feelings and thoughts and it encourages a positive attitude regardless of what the circumstances may be. It is also a powerful grounding stone and can help with balancing your many responsibilities like work\life balance.
Larger specimens like this are often brittle and will shed.
Approximate Measurements: 6 inches in height & 4 inches in width.