How to identify real jade At present, some booths selling Baoyu in the market are often mixed with some exquisite artificial jade. The more reliable identification methods are: seeing, listening and testing. Look, mainly depends on the crystal transparency, real jade has strong transparency and oily luster; Listen, Zhen Yu's voice is crisp, but her voice is dull; In the test, the real jade scratched the glass, but the jade itself was intact. Common fake jade includes plastic, stained glass, marble, electrochromic fake jade made of jade powder and crystal with salt water, imitation jade containing nitrate, etc. And their identification methods are different. Plastic is lighter than jade, and its hardness is poor, so it is generally easy to identify. It's easy to distinguish between painting and getting off work. As long as you take it under the light or check it in the sun, you will see many bubbles in the glass. It is difficult to distinguish fake jade by electric color. Its purpose is to electroplate inferior jade and then coat it with a beautiful emerald appearance, so it is easy to mistake it for real jade. At this time, you need to observe carefully. If there are some small cracks with blue in the green, it is fake jade. Because electroplating will leave cracks, experts call it "spider claws". It is also said that if the electro-colored fake jade is put in hot oil, the electroplating color will fade and return to its original color. Synthetic jade made of jade powder, crystal and salt water is an imitation dark old pit jade. The identification method is simple, that is, their specific gravity is different. The specific gravity of natural jade is 3.3-3.4, while that of synthetic jade is only 2.8. Weigh by hand, or use a balance to distinguish between true and false. Jade imitated with nitrate looks whiter and smoother than jade. The ancients said, "Jade is better than salt, so it must be high." That is, white jade should be as advanced as nitrate. It can be seen that nitrate and jade are difficult to distinguish. However, the facts are different after all. As far as color is concerned, white jade is often blue, and white is rare, while nitrate is pure white. As far as jade is concerned, jade is moist and delicate, as fat as cream. Nitrate is wet, but there are thieves in it. White jade is a natural product, and it is difficult to have a unified structure, including jade ribs and jade flowers. If nitrates are manufactured artificially, there is no such appearance. White jade has a solid texture and no bubbles can be found. No matter how well nitrate is treated, bubbles and pores are often exposed. If you know these items, you won't regard nitrate products as jade articles. Emerald is expensive, and the selection technology is very demanding. It is difficult for most consumers to distinguish its advantages and disadvantages, and it is easy to buy inferior products or fakes with a little carelessness and suffer huge economic losses. There are many jade shops in the market, and jade articles are generally divided into nephrite and jadeite. Emerald is also called emerald. Academically speaking, nephrite is a silicate containing calcium, magnesium and iron; Jadeite is a silicate containing sodium and aluminum. Here are the advantages and disadvantages of jadeite, and the methods to distinguish between true and false jadeite: water identification method drops a drop of water on jadeite, if it is dewdrop, 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. Identification of jadeite: We can observe its authenticity from three places: First, because the glass is very brittle and hard, its structure is loose, and it lacks the density and toughness of jadeite, so it can't stand strong high-speed rotary carving. Therefore, high relief and round carving generally cannot be processed on glass. Second, use a magnifying glass to find bubbles, even if you can only see one, it is glass. Third, chromium oxide is added to the glass, and the color is close to ruby; Adding cobalt oxide, the color is close to sapphire; Adding chromium oxide and copper oxide, the color is close to emerald. There are many colors. However, its color tone is always relatively thin, lacking the oily and rich feeling of natural jade color. The more difficult varieties are mainly fake jade made of polymer materials. Its color can be adjusted at will, and it is difficult to find bubbles under a magnifying glass. It is said that the original appearance can be displayed on the infrared spectrometer, but the key to visual inspection is to see whether there are natural stone lines on the surface of the instrument, in addition to the general unrealistic destructive inspection, cracking to find the stone section, burning to see its reaction. After all, manual processing is unnatural and will be exposed under a magnifying glass. The identification of jadeite can be divided into two categories: new jade and old jade. The identification of new jade focuses on the authenticity of the variety, the quality of the texture and the fineness of the sculptor. Some technical contents have been talked about before. However, the identification of Lao Yu is unusual. In addition to several basic requirements, new jade also needs to know the production age and historical value of jade. The confirmation of the historical value of jade is based on a clear era. Familiar with the common shapes, characteristic crafts and popular colors of jade in different times. Then refer to the papers on the characteristics of jade in a certain era, and get in touch with each other, and your jade dating level will be rationally improved. At this time, you should contact the real thing as much as possible and correct the parallax between the picture and the real thing in the book. In addition, the judgment of the times allows a certain span on some jade articles. Because jade tools are precious and not perishable, as a family heirloom, early jade appeared in tombs hundreds of years later, and there are many precedents. The late period of the last era and the early period of the next era are not completely unified in style. Jade has no date, and subtle differences are normal. Look at the truth. This is a relatively simple method to identify true and false! 1; I just put jade on my face and felt very cold. If it doesn't get cold for two or three seconds, it means it's true. Because jadeite can transfer heat and dissipate heat quickly! If it is not cold on the face, it is fake. 2; That is, the magnifying glass should be 10 or 30 times to look at the crystals inside to see if there are any small cracks like cobwebs, and whether the color is on the cracks or on the jade surface. If there is, it is fake. Hetian jade looks like rice paste, because the crystal is fine and the color is even. Jade looks like the wings of a fly, some like a little ofloxacin, and some like broken glass. Because the jadeite crystal is not delicate enough, there are many colors on the same jadeite. 3; It's an appraisal of destruction. Set it on fire. It's just burnt black, burnt yellow and stinky. Black and yellow are fake if they are not washed off. It's burnt and smelly. That's even more fake. Really, when the fire comes, there will be small water droplets attached to the jade surface, which will burn black and return to its original color after washing. But we generally don't use this method, which is not good for jade. Look at the delicacy of jade. What is delicious? Fine is the crystal of jade, and the size of the crystal depends on the quality of jade. The smaller the crystal, the better, and vice versa. Crystal is the internal structure of jade, with small crystals in the form of columns and crosses, that is, you shine a lamp on the jade to see if there are snowflakes and the like. The bigger the snowflake, the worse it is. Look at the quality and quality of jade! 2. Look at transparency. Transparency is also important. The best jade is not as transparent as glass. It feels good to be like ice. The more opaque it is. 3 Look at the color. The color of jadeite is green, followed by purple, yellow, black and melon skin green. Hetian jade is white, and white like sheep fat is the best, followed by yellow, blue, black and sugar. .......