What is the difference between crystal and tourmaline? What is the difference between crystal and tourmaline?
What is the difference between crystal and tourmaline? What is the difference between crystal and tourmaline? What other ways do we have to distinguish the difference between crystal and tourmaline? China Jewelry Merchants Network Xiaobian collects some knowledge about the difference between crystal and tourmaline to share with everyone.
Many unprofessional merchants in the market sell some low-end tourmalines and crystals together, introducing that tourmaline is a kind of crystal. Many people think that tourmaline is a kind of crystal that is not expensive. In fact, this is not true. Tourmaline and crystal are two different minerals. In the jewellery world, tourmaline is a medium-to-high-end gemstone, and high-quality tourmalines are rarer than diamonds. Crystal is a general gem.
Crystal and tourmaline originally had a very different proportion. The proportion of tourmaline is 3.06 and the proportion of crystal is 2.66. It is easy to see that tourmaline is much larger than crystal.
In one is a more professional identification method, using a dichroic mirror. This method can be seen at a glance that those are crystals, which are tourmalines. Tourmalines are pleochroic. It is very simple to say that the color of the tourmaline has a transitional color, and many parts of the crystal have no transitional color, except for the ametrine. Outside the special crystal.
In a night from the refractive index, it can be judged whether it is tourmaline. The refractive index of tourmaline is between 1.62-1.67, and the refractive index of crystal is 1.55. The gloss does not seem to have the beauty of tourmaline.
The chemical composition of the two is also different. Tourmaline is a complex silicate. Crystal is a colorless and transparent large quartz crystal mineral. The main chemical component of crystal is silica. When the crystal of silica is perfect, it is crystal. After silica gelation and dehydration, it is agate. The silica hydrogel is solidified and becomes opal. When the silica grain is less than a few microns. It forms chalcedony, vermiculite and secondary quartzite.
Due to the complex chemical composition of tourmaline, there is currently no synthetic tourmaline. Synthetic crystal jewelry is available in many markets. In 1768, the famous Swedish scientist Linnes discovered that the tourmaline is piezoelectric and pyroelectric, and the mineralogical name is "tourmaline". Crystal has no such effect. The color of the tourmaline is also much richer than the crystal, subdividing as many as 15 kinds of complex colors. The hardness of tourmaline is also higher than that of crystal, and the magnetic field of tourmaline is several dozens to hundreds of times of the same color crystal.
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