Black tourmaline:

It's the bodyguard stone that provides protection and elimination of negative energy.

The Black Tourmaline crystal properties work like a sponge, soaking up all the negative energy that surrounds it.

Through absorbing negativity, the stone can prevent unwanted energy from entering your home, mind, body, or spirit.

Black Tourmaline crystal is also a key component in everyday cleansing rituals and can help to release any unwanted energy already stored in your energy field.

Good for grounding your house if you have a very active house. Place in the yard in all 4 corners of your house. Above windows and doorways.