Identification method of jadeite jade: There are many reasons for false skin, and it is deceptive. Generally speaking, the reason for making fake jadeite is to cover up the essence of jadeite and achieve the purpose of deception. The method of counterfeiting is to crush the oxide layer of some jadeite mountain materials and then stick it with glue. Therefore, soft texture, colloid and no natural arrangement of fine particles are the biggest characteristics of this kind. When identifying, we should look at (observe) two touches (feel), three knocks (listen to the falsehood of pronunciation), four points (tightness) and five thoughts (analysis) to make a correct judgment. Because of cracks, black spots, breakage and other problems, fake rough stones and finished products distract or cover up by creating illusions. The methods are mostly blackening, writing, taping, plastering, peeling without polishing, making small holes in large pieces or wiping small spots. Fake antique jewelry is an important part of China's history and culture. China people have a long history of understanding, using, making, appreciating and loving jade. It is of great significance and self-evident value to study the history and culture of our country. Therefore, counterfeiting behaviors and means emerge one after another. In addition to the necessary jewelry knowledge, we should also have rich historical knowledge and identification literacy, because this is also an archaeology. Dark green (commonly known as light color) is a kind of artificially dyed green, which may be confused with natural green if not paid attention to. This kind of green is stored for a long time, or the chemical reagent is not applied properly in the dyeing process. Green is often evil and often has the feeling of flashing blue and yellow. As the saying goes, "look at green coldly" is sometimes very helpful to identify green. In addition, understanding the characteristics of color is also very important for recognition. The color of dark green is from the outside to the inside, shallow inside and deep outside, and its green is composed of countless small cracks embedded inside. Some places are dark green, some places are light green or no green, and green exists in jade in filiform, which is one of the biggest characteristics of dark green. Although jadeite also has filiform green, it can be distinguished from the appearance that there is no green in green and no green in green. It can also be seen from the color filter that green will turn red under the color filter, but natural products will not. Sometimes, some green fakes are excellent and the lines are subtle. At this time, it is necessary to observe carefully or use a magnifying glass to know the source of green from the tiny grasshopper lines and cobweb lines. Whether it is green or not can be identified by high temperature and acid soaking in addition to careful observation. After acid soaking, the green color will disappear, and so will the test at high temperature. Of course, the temperature should not be too high, generally limited to iron is not red. Both methods are limited and should not be used at will. The chief engineer's first view of the varieties with poor color is similar to the texture of bean curd residue. The so-called stone is a kind of green substitute, such as glass powder and jade. This is a common counterfeit product, ranging from bracelets and cigarette holders to rings and beads. At present, this counterfeit product is no longer rare, because it is easy to distinguish from jade. Stone products are green, but the color is dim, and there are often obvious visible bubbles in the body, with light specific gravity and obvious touch. The cracks are shell-shaped. If you drop water on a polished surface with a thin stick, the glass and burning substance will immediately disperse, but jade will not, and neither will plastic. True and false mixed color This is a highly deceptive and difficult-to-distinguish artificial fraud. Its purpose is to increase the volume of green or to dye green in the green part or interruption, because its color is lighter. Its characteristics are like pink green, but it is difficult to determine because of the coexistence of truth and falsehood in identification. The opening piece is made of colorless jadeite with poor texture, and a thin piece with positive color, good texture and consistent size is pasted at the opening to cover up the inferior part inside. When identifying, pay attention to whether there is abnormality around the opening, whether there are adhesion marks, and whether the tapping sound is true or false. Draw a heart with colorless and transparent jade, dig a hole from the middle to a few millimeters outside, coat it with green dye, such as pigment, use tin foil paper as the base, and then stick it on the mouth. This fake jade is very similar to nature and has good transparency. It always gives people a feeling of being shallow outside and deep inside. This kind of performance is like Zhang Wei being put into a transparent green paper on the north side of a piece of glass, and the adhesion marks are the main basis for identification. Skylight covers are mostly inferior jadeite. When you see its inferior color difference, after everything is opened, you will cover the opening with fake leather, which is similar to the color and texture of the original leather shell. When identifying, pay attention to the changes of color, sand and texture of each part of the leather shell, and observe the color changes of each part of the leather shell in the sun. Digging and filling the pit, the original stone is unknown. In order to understand the internal situation, first make a small hole, see the poor quality or take out the green part and cover the hole. Its color and texture are similar to the original stone, showing concealment. After forging jadeite with poor weathering quality or making fake leather shells for other reasons, in order to cover up its artificial traces, it is buried in the soil for several years, and corrosive substances such as acid or alkali are placed around it for erosion in order to improve transparency. New jade and fake ancient jade refer to jade products. In order to increase its value, it artificially imitates the ancients in patterns, carving and polishing, or uses smoke, fire, artificial imitation and mud erosion. Attention should be paid to whether the surface oxide layer is naturally oxidized during identification. Water identification method drops a drop of water on jade, and if it becomes dew, it is real jade; The water droplets disappear quickly, which is a fake. Touch it with your hands. If it is real jade, it will feel cold and lubricated. In the inspection method, jade objects face bright places, such as sunlight and lights. If the color is clear and the green is evenly distributed, it is a real jade. The tongue licking method has a astringent feeling on the tip of the tongue; Fake jade has no astringency. Magnifier Watch the purchased jadeite under the magnifying glass, mainly to see if there are cracks. The jade without cracks is the best quality, followed by cracks. Even if it is real jade, the value of cracks is greatly reduced. The more cracks, the more obvious and the lower the value. Good luck, wealth and happiness!