Black Tourmaline is a type of mineral that is known for its grounding and protective properties. It is often used in crystal healing and is believed to help alleviate stress, anxiety, and negative emotions. Black Tourmaline is also thought to help with physical ailments such as back pain and poor circulation. Some people use the powder form of Black Tourmaline in products like bath soaks and body scrubs, or as an ingredient in homemade skincare and beauty products. It is also sometimes used as an additive in paint and other industrial applications due to its conductive properties.The color of the Streak is white, so after grinding to Powder it colors appear as light grey. Black Tourmaline is also used by different Cosmetic companies for making skin care products.