1317-93-7용도tourmaline is used to increase product viscosity, this is a semiprecious stone. There is little clinical evidence supporting therapeutic claims associated with tourmaline.
정의tourmaline: A group of minerals composed of complex cyclosilicates containing boron with the general formula NaR3 2+Al6B3Si6O27(H,F)4, where R = Fe2+, Mg, or (Al + Li). The crystals are trigonal, elongated, and variably coloured, the two ends of the crystals often having different colours. Tourmaline is used as a gemstone and because of its double refraction and piezoelectric properties is also used in polarizers and some pressure gauges.
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