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 One grade of black tourmalines of craft, the surface is smooth and glossy , the fracture is pitch- black, flawless, the hardness is high, Cut, polish , throw and grind and make the ornament, necklace, pendant, inlaying and give up the best material of Taxi.
The tourmaline is a kind of boron and silicate mineral, calling" the green imperial or royal seal" of the gems, there are its colors in many, The crystallization has nothing in common with each other, the crystal structure has tripartite crystal, six arrises body, post form body and one bunch of needles form( fibrous) respectively, The hardness of the tourmaline is generally about 7.3-9.6, the relative density is 3.03-3.25
A: is used in the building and mounted and whitewashed. On joinsing micro- ultra , brushes the wall and ceiling inclusive in the coating, Not only can absorb the peculiar smell rapidly, can also absorb cigarette flavor for a long time .
B: is used in textile : Ultra detailed tourmaline powder make ultra detailed fibre , can make antimagnetic, dampproof, cold-proof cotton-wadded quilt, cotton cushion, defend electromagnetic radiation shirt, undershirt, shoe-pad,etc..
C: is used for purifying water quality to make the tourmaline powder tourmaline ceramsite, is used for purifying in the ore container , Can remove the chlorine of the running water , thus change the acidity of water. Whether health care it used in |
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