Black Tourmaline is considered to be the best stone for protection against Electromagnetic Pollution (radiation) from cell phones, computers, microwaves, WiFi, and radio waves. Metaphysically, Black Tourmaline repels negativity, is grounding and protects the wearer.
Metaphysical Properties of Black Tourmaline
It is said to be a very good stone to wear when you’re experiencing any kind of stress. Placing black tourmaline under your pillow is thought to protect you from nightmares. Placing a black tourmaline at the entrance to your house will protect you from jealous neighbors. Emotionally, it is excellent for dispelling fears, obsessions, neuroses, and bringing emotional stability. Physically it is alleged to strengthen the immune system and help with heart disease, arthritis, and gout.
Location
Deposits of this stone have been found in Africa, Afghanistan, Pakistan, Australia, Brazil and the USA.