Formaldehyde is a renewable resource
Modern science has confirmed that tourmaline unique piezoelectric and thermoelectric properties can make the surrounding air ionization, the formation of a large number of negative ions, purify formaldehyde, dust, bacteria and other toxic and harmful substances.
Domestic tourmaline in order to call the best quality products, the world is also very rare, in the town of jade, the name of Xinjiang, and Tian Yu, aquamarine and Chong Xi tourmaline are famous.
Tourmaline stone: tourmaline gems rich in color, high transparency, is a treasure of non renewable resources, the international market, the market price of up to $20 thousand tourmaline / carat.
