Tourmaline, also known as tourmaline, has the functions of enhancing sleep and radiation resistance. Wearing tourmaline will generate a current of 0.06 mA, which is consistent with the biological current of human body and is good for the body. Usually common tourmaline tiles and tourmaline household appliances are also good for human body, but it is strongly not recommended to soak tourmaline with water. If you really want beauty, there are many ways to ask me specifically, but don't soak tourmaline in water, which is difficult to decompose. In addition, although tourmaline is a rainbow gem, black tourmaline is mostly used to make bracelets and wear them. Never take it orally.