1, tourmaline is the handicraft name of tourmaline, which is a kind of jewelry in tourmaline family. It is a borosilicate crystal, which contains chemical elements such as aluminum, iron, magnesium, sodium, lithium and potassium, and presents various colors.

2. The mineralogical name of Tourmaline is tourmaline, and the English name is tourmaline, which is derived from the word "Turmali" in ancient Sinhalese, meaning "mixed gem". In some historical documents of our country, it is called arsenic, tourmaline, bixiaxi, broken evil gold and so on. Tourmaline crystal Tourmaline is a complex triangular columnar crystal, and there will be characteristic growth stripes on the surface of the crystal parallel to the extension direction of the columnar crystal. On the cross section, it is a spherical triangle with curved surface.