In recent years, jewelry consumption has gradually entered the family of ordinary people. However, consumers have reported on consumer traps in the process of buying jewelry, but they have also seen newspapers from time to time. On the occasion of the March 15th International Consumer Rights Day, East China University of Science and Technology held the “Eye of the Eyes†campaign to popularize gem identification techniques to the public through expert lectures and on-site treasures. As technology advances, professional equipment has now been able to easily identify and identify the authenticity of a gemstone. But for the average consumer, in the "Taobao" process, still rely mainly on human sensory organs. Dr. Liu Xueliang, technical director of the National Gemological Testing Center of East China University of Science and Technology and a gemstone testing expert, believes that the identification and basic identification of gemstones is not as "high" as imagined. By observing, most of the characteristics of gemstones can be identified, but The cultivation of observational ability requires a gradual accumulation process. Liu Xueliang said that taking the identification of diamonds as an example, there are at least five simple methods besides instrument testing. One is the perspective test: for the most popular round multi-faceted diamond on the market, draw a line on the paper and press the diamond face down on the line. If you can't see the line through the diamond, it is true; the second is Thermal conductivity test: The sample to be tested is placed on a glass plate together with a sample known as a diamond, and the two are ventilated to observe the spread of the mist. The fog on the diamond will spread quickly, and the imitation will disappear for a longer period of time. The third is the lipophilic test: the diamond pen (special pen for oil-based ink) is lined on the surface of the diamond, which will be an unbroken straight line. And the line on the surface of the imitation is an intermittent dotted line. The fourth is the dispersion test: the true diamond reflects only three colors, white, orange, and blue, and the imitations and synthetics are colorful. The fifth is to enlarge the inspection: observe various information related to the growth structure, such as inclusions, growth lines, cleavage lines, beards, and so on. In addition to practicing a pair of eye-catching eyes, when buying gems and gemstones, consumers should also be careful about the consumption traps of unscrupulous merchants. Liu Xueliang said that in addition to the common synthetic products and processed products posing as natural products, low-end products posing as similar high-end products, some unscrupulous merchants will also achieve the effect of mixing fish by confusing concepts. For example, using abstract names such as "Jade" and "Gem", use hardness, fire color, and color to confuse consumers, confuse the origin or synthesis company with the name of the gemstone, and use the "18KGP" logo to create the illusion of "18K". . Liu Xueliang reminded that the name of the gemstone has clear requirements in the industry. Only the specific names such as “Jade†and “Hetian jade†can be used. Names such as “Hetian jade†are also irrelevant to the place of origin, but represent a category of jade. . At the same time, the hardness, fire color, color and other indicators are not the more accurate the order of magnitude. Knit Dobby,Polyester Knit Dobby,Interlock Dobby Knit,Knit Dobby Stripe Interlock Shaoxing Sinofashion Textiles Co.,Ltd. , https://www.shownaturetex.com