Today, a simple and easy-to-use identification method is introduced. According to the lipophilicity of diamonds (diamonds have affinity for oil, that is, the function of adsorbing oil), diamonds and diamond imitations can be distinguished. Method 1: Cross-testing. Draw a line on the diamond table with a diamond pen (special pen for oily ink) or ballpoint pen, which will leave an uninterrupted straight line. Other imitations are not lipophilic, and when they are crossed in the same way, the ink will gather into intermittent water droplets at the intersection. Method 2: Water drop test. Because the wettability of diamond corresponds to its hydrophobicity, water can not attach to the surface of diamond in the form of film, but only exists in the form of water droplets. On the diamond and imitation table, drop a small drop of water, which should be the same size. Observing the time and contour of water droplets, the water droplets on diamonds will remain spherical for a long time, while the water droplets on imitations will disperse in a relatively short time. To do this test, the surface of the sample to be tested must be wiped clean, and it is best to have a diamond standard sample as a reference, which can best explain the test results. These two methods are very helpful to distinguish diamonds from their imitations. If you are not sure whether you have diamonds, then use these two small methods to do a test! Simple, convenient and practical, which is true or false will soon be known! Distinguishing method of true and false crystals: When crystals became popular, many counterfeit products appeared on the market, which not only troubled consumers, but also left many shops confused because they were not professional enough. Many friends want to know how to distinguish the authenticity of crystals. The following counterfeit products, such as 1. Acrylic and plastic products can be distinguished from the touch, temperature and hardness of hands. Besides, acrylic, 2. Glass products, clear as water at first glance, have no texture, low hardness, single refractive index and bubbles, which are easy to distinguish. 3. Melted crystals, mainland products, like glass, are mostly made into spheres with the size of seven or eight centimeters to ten centimeters. They are very beautiful, but they have a single refractive index and low hardness. They can be distinguished by using a polarizer or measuring whether the hair has changed by two. 4. Crystal glass is actually "lead glass". The most popular glass products in the market are those with lead metal. Because of its good refractive index and dispersion rate, it is dazzling and dazzling. It is most suitable for decoration and decoration, but not for spiritual use. Generally, it can be distinguished by vision. 5. Artificial crystal, also called "crystal cultivation", the original stone has no hexagonal crystal system, which is the easiest place to judge; But if it is ground into a finished product, it is almost the same as rock crystal in terms of density, hardness and feel. It is not easy to distinguish by the above method, and it is necessary to use an "ultraviolet spectrometer" to distinguish between true and false. The most common products on the market are colorless and transparent white crystal, amethyst, topaz and aquamarine crystal fakes. I suggest that friends, when encountering controversial crystal ore, it is best to send it to an impartial third party, such as an appraisal office, for identification. It doesn't cost much, but it has professional guarantee. If necessary, even send it to more than two appraisal institutes for appraisal. It's best to choose "original stone" and look at its crystal form, growth line and primary minerals. It can't be wrong. Generally, the standard on the market is that the bigger the better, the more transparent the better, and the finer the color the better. Crystal magicians believe that when choosing a crystal, what they like is the most important, which is commonly known as the eye margin, plus some common sense, it is much easier to choose. Now many unscrupulous businessmen pass off glass as crystal stones. It is necessary for us to remind you of several ways to distinguish crystal stones: (1) At first glance, crystal stones always contain some impurities due to the influence of the environment. When you look at the sun, you can see weak and uniform small horizontal stripes or catkin-like substances. However, fake crystals are mostly made of inferior crystal slag and glass slag, which are melted, polished and colored, without uniform stripes and catkin-like substances. (2) Lick your tongue: Even in the dog days of hot summer, licking the surface of the crystal stone with your tongue will feel cold and cool. Fake crystals are not cool. (3) Illumination: When the crystal is placed vertically in the sun, it can emit beautiful light from any angle. Fake crystals can't. (4) Hardness: The hardness of the crystal is very high, and it will leave no trace when lightly scratched with gravel on the jewelry; If there are streaks, it is a fake crystal. (5) Inspection with a polarizer: the rock crystal rotates 360 degrees under the polarizer, with four bright and four dark changes, while the fake crystal does not change. (6) Check with dichroism: natural amethyst has dichroism, while fake amethyst has no dichroism. (7) Magnifier inspection: under the transmitted light, the bubbles that can be found can be basically classified as pseudocrystals. (8) Check with hair: If the crystal is placed on a hair, the human eye can see the double shadow of the hair through the crystal, it is a rock crystal, mainly because the crystal has birefringence. (9) Test with a thermal conductivity meter: set the thermal conductivity meter to 4 squares of green to test the gem, and the rock crystal can rise to 2 squares of yellow, while the false crystal does not rise, and when the area is large, it will rise to 1 square yellow. In recent years, with the deepening of high-tech synthesis technology, the fidelity of counterfeit products has been enhanced, and the growth of artificial crystals has all the characteristics of rock crystals. Therefore, these can't be the unchanging truth to distinguish between true and false crystal stones. We can only distinguish between crystal and glass as the basis for the difference. Another secret of selection is to use the "intuition method": on a special day, with a happy mood, improvise and choose a crystal with induction. People have frequencies, and crystals have frequencies of crystals. People are choosing the crystal, and the crystal is also choosing its owner. When the two frequencies overlap, everything is very natural and appropriate. Others, such as beauty and ugliness, quality and size, are not a problem. "Give me the crystal" is the best crystal! Good luck and happiness!