In ancient times, olivine was called "the jewel of the sun." The connection with the sun is likely to be related to the beliefs of the people at the time. They think that the olivine has the same strength as the sun, and it can drive away evil and fall into the evil. Peridot is the birthstone of s month, symbolizing the deep feelings, happiness and harmony of husband and wife. Legend has it that the tourmaline is one of the favorite gems of Empress Dowager Cixi. Although the history of tourmaline used as a jewellery ornament is not very long, it has now become the focus of attention of major jewelers. Identification of olivine The difference between olivine and similar gems. Similar gems are diopside, yellow-green gold emerald, yellow-green calcium aluminum garnet, tourmaline, boraxite, green zircon and glass. Diopside color and luster are not as bright as olivine, and the density is 3.29 g/cm 3 with less inclusions. The yellow-green gold emerald has a high density of 3.73 g/cm 3 and a high refractive index of 1.746-1.755, and the bottom facet has no double shadow. The yellow-green calcium aluminum garnet is a homogeneous body with strong luster and a sub-gold diamond luster. The density is 3.61 g/cm 3 and the hardness is 7-7.5. The yellow-green tourmaline has a small density of 3.06 g/cm 3 and a high hardness of 7-7.5, which is obvious in dichroism. The borologite is yellowish in color, less green, and has a high density of 3.47 g/cm 3 . The glass is homogeneous, with a hardness of 5-6, a density of 2.3 g/cm3, and a refractive index of 1.5, which are smaller than olivine. What is the difference between natural olive crystals and tourmaline? If the instrument is used to determine the refractive index (especially birefringence), density, etc. of olivine can be distinguished from most similar gemstones, the correct identification of olivine. The biggest possibility for counterfeiting olivine is green glass, but it is also easier to distinguish. Glass generally has bubbles and swirls, and it is a homogeneous body. Identification of tourmaline A tourmaline has a different thermodynamic property than a similar gem. When the tourmaline is heated, rubbed, or irradiated by the sun, its surface is charged. These charges are attracting to the opposite charge in the air, and can adsorb dust, paper dust, and the like with an opposite charge in the air. This is a unique feature of the tourmaline. You can do simple tests in this way. Identification of natural blue tourmaline (1) Color tourmaline is more expensive in red and blue, and yellow and green are more common. In the choice of inlaid tourmaline jewelry, red, blue, green is better, the color is required to be even and beautiful; in the tourmaline necklace and tourmaline bracelet, the color is better, the color of each bead can be different, with red, yellow, Blue, green, purple and other colors; (2) Transparency tourmaline requires crystal clear, the more transparent the better the quality, do not have obvious fog or opacity; (3) The purity of tourmaline is relatively brittle, prone to cracks, and the interior contains a large number of inclusions. The presence of a large number of fissures and inclusions will affect the transparency, color and fire of the tourmaline, while the inner pure tourmaline is also compared. Rare, belongs to the top grade. When picking, try to pick the inside clean. (4) Pay attention to the choice of the nature of the tourmaline tourmaline, which is more colorful, and more valuable is the presence of two or more colors on the same tourmaline, namely two-color tourmaline or multi-color tourmaline, and the inner infrared green watermelon tourmaline. It is also more precious; in addition, the tourmaline cat eye belongs to the top grade in the tourmaline. There is also a kind of red treasure tourmaline, because the output is small, the color is rich and precious, but often the purity of this tourmaline is not good. What is the difference between olivine and tourmaline? Tourmaline is a colored gemstone with a large variety of colors, and green tourmaline is one of the main components. Green is the color of nature, symbolizing the vibrant nature, and green tourmaline is liked by many other green gems. However, there are many colored gemstones with green tones. To distinguish them from green tourmalines is a must-have for every tourmaline enthusiast. Here is a brief introduction to how to distinguish between green tourmaline and olivine. Peridot is also a green colored gemstone, but its value is completely inferior to green tourmaline. Both olivine and green tourmalines have large birefringence, but their colors are slightly different. The olivine green has some yellow tones, the overall yellowish green, while the green tourmaline is generally darker and darker overall. some. In addition, the contents of olivine and green tourmaline are completely different. The olivine is characterized by a water lily-like inclusion and the tourmaline contains typical irregular linear and thin cavities. Rayon Print Solid Fabric,Hawaii Design Print Fabric,Vibrane Print Rayon Fabric,Rayon Reactive Print Fabric SHAOXING MNC IMP&EXP CO.,LTD , https://www.mncchina.com
August 24, 2021