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Personne àcontacter Mr. Wang
Lian Meng Road, Shi Jia zhuang, He Bei
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.**9.6, the relative density is 3.***3.*5.We have tourmaline powder, raw tourmaline stone, tourmaline particle , tourmaline ball and so ***** are of various size and color.
