Black tourmaline is widely recognized for its protective and grounding properties. It is believed to absorb and transmute negative energy, providing a shield against psychic attacks and negative influences. Additionally, it can help with stress relief, emotional stability, and promoting a sense of security. 
Here's a more detailed breakdown of the benefits:
Protection:

• Protection from Psychic Attacks: It is believed to guard against psychic attacks and negative entities. 

• EMF Protection: Some believe it can help protect against harmful electromagnetic frequencies (EMFs) emitted by electronic devices. 

• Negative Energy Shield: Black tourmaline is thought to absorb negative energy and transmute it into positive, usable energy, acting as a protective barrier. 

• Stress and Anxiety Relief: Black tourmaline is often used for stress reduction and emotional grounding, helping to calm anxiety and fear. 

• Emotional Stability: It is believed to promote emotional balance and a more positive and balanced state of mind. 

• Grounding and Stability: It helps create a sense of grounding, stability, and security. 

• Detoxification and Purification: Some believe it can help detoxify the body and purify the aura. 

• Improved Focus and Clarity: Black tourmaline is thought to enhance focus and mental clarity. 

• Spiritual Growth: It is associated with grounding, balancing the body's energy field, and promoting self-awareness. 

• Pain Relief: Some believe it can be helpful for pain relief, particularly for arthritis and muscle pain. 

• .