Tuomalin TOURMAINE is one kind of the crystal mineral substance , has the pyroelectricity and the piezoelectric, function being able to release the far infrared anion enduringly , having bioelectricity , rich , be able to restrain a bacterium breeding , clean mineral nutrition element cosmetology , activation subcutaneous cell increasing the skin elasticity , having a cosmetology maintaining self's beauty. Be used for the finger be numb , rheumatic disease changes