Black Tourmaline is amazing to clear negative energy within a space or even a person.
Placed in strategic places in the home it will filter negative energy entering from outside. For example, if your house backs onto public space like a park, a small piece on your window sills can protect the space from - any negative energy from that area encroaching into your home.
It also balances all the chakras and is a great stone for grounding.
Sphere weighs 295 grams.
Stand not included.