Some people think that tourmaline belongs to the class of spar. Some merchants also say that tourmaline is crystal. What is the difference between tourmaline and crystal? Tourmaline and crystal are simply 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. Here are the differences between tourmaline and crystal: 1. Tourmaline - Tourmaline Chemical formula: Na(Li,Al)3Al6(BO)3Si6O18(OH)4 Crystal system: Trigonal system Hardness: 7-7.5 Proportion: 3.06 Refractive index: 1.62-1.67 Polychromaticity: dichroism 2, crystal - quartz (monocrystallinequartz) Chemical formula: SiO2 Crystal system: Trigonal system Hardness: 7 Specific gravity: 2.56-2.66 Refractive index: 1.544-1.553 Polychromism: none 3, from the above data, we must see that crystal and tourmaline originally had a very different proportion from the proportion, the proportion of tourmaline is 3.06 and the proportion of crystal is the largest 2.66, it is not difficult to see that the proportion of tourmaline is The crystal is much bigger. 4, in one is a more professional identification method, using two-color mirror detection. 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. 5, in a night from the refractive index can be judged whether it is tourmaline, the refractive index of tourmaline is between 1.62-1.67, the maximum refractive index of the crystal is 1.55, the gloss does not look like the color of the tourmaline. 6. 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. 7. Due to the complex chemical composition of tourmaline, there is 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. The above is about the difference between tourmaline and crystal. I hope that through the introduction of this article, you can have a deeper understanding of tourmaline and crystal. Large Screen Display,Ips Touchscreen Monitor,Large Screen Touch Screen,7.84 Inch Tft Lcd Shenzhen Yetai Optoelectronics Technology Co.,Ltd. , https://www.yetailcd.com
May 21, 2021