Black Tourmaline pendants are believed to offer several benefits, primarily related to protection and grounding. They are often used for shielding against negative energies, electromagnetic radiation, and psychic attacks. 
Black Tourmaline is also associated with grounding and balancing the root chakra, promoting feelings of safety, security, and stability. Additionally, wearing 
Black Tourmaline pendants may help alleviate stress, anxiety, and tension while promoting a sense of calm and resilience. Some people also believe that Black Tourmaline can aid in purification and cleansing of one's energy field, allowing for greater clarity and focus.