Black tourmaline is a powerful protective stone that is known for its ability to deflect and absorb negative energy. It is believed to be one of the most effective stones for grounding and protection from negative influences. Black tourmaline is also believed to aid in healing physical and emotional issues, as well as helping to clear away fear and feelings of paranoia. It is thought to be particularly helpful for those who are feeling overwhelmed or stressed, as it is known to help bring inner peace and balance.