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)
Every kind of jade has a different classification; Like jadeite, there are glass species, ice species, ice wax species and wax species according to water content; Hetian jade is divided into suet jade, white jade, blue white jade, sapphire, topaz, jasper and jet according to color and texture. Each kind of jade has its own classification, but there is no grade in identification. First-class jade, moist, thorough and greasy, is moist in your hand. The main method to identify the authenticity is to use a magnifying glass or microscope to see that there is a fiber interwoven structure inside the jade, and the particles are fine; Artificial glass has no structure and bubbles can be seen. You can also carve it in an inconspicuous place with a knife. What can be carved must be fake jade, but what cannot be carved is real jade. As the saying goes, "Gold is valuable, but jade is priceless". Because the top grade Hetian jade is getting scarce, it can reach tens of thousands to hundreds of thousands of yuan per kilogram, while the average Qinghai white jade and Russian white jade are only a few thousand yuan per kilogram, so some people mix it with Hetian jade. The minerals of these jadeites are basically the same as Hetian jade, but the surface color is dark and not soft, which will be even dimmer after a long time.
Old jade and new jade can be distinguished from two aspects. There is an oxidized jade skin on the surface of the old jade, commonly known as "patina", which is similar to the skin of autumn pear and obviously different from the natural color of jade, while the new jade does not. Judging from the theme of sculpture, ancient jade is a symbol of rank and power, and there are many mythical flowers, birds and figures, such as dragons and phoenixes. New ones are generally auspicious themes.
Jade has been closely related to China culture since ancient times.
In the eyes of China people, jade is a symbol of good fortune, so China people like to use jade to protect themselves, keep peace, ward off evil spirits, and even bury them with jade; Westerners mainly appreciate the elegance, grace, mystery and romance of jade.
Classification of jade:
Jade can be divided into nephrite and jadeite, which are two different minerals. The colors of nephrite are translucent white, yellow, green and black, and the colors are evenly distributed. As for jadeite, there are mainly white, purple, yellow and green, and the uniformity of color distribution among different germplasm will be different.
The vast majority of jades produced in China are nephrite, and "sheep fat white jade" is a treasure in nephrite, with delicate texture and white color. Many exquisite jade works of art are carved from nephrite.
Jade is divided into nephrite and jadeite. Nephrite can be divided into white jade, topaz, sapphire, jasper and jet because of its different colors. The texture is "body-like congealing fat, clean, thick and moist, and dense pulse." Identification method of nephrite:
1, nephrite and jadeite:
Jade is often regarded as an old nephrite because of its delicate texture, full head and waxy to oily luster. However, jade is soft and easy to eat with a knife. Carve a few times with an ordinary knife. It is jade that eats the knife, but nephrite that doesn't enter the knife. If you don't have a knife, you only need to look at the place where the knife is cut when carving. Nephrite won't be hairy when it is cut, but Xiuyu does. In addition, jade feels light, and its sound is dull and dumb when struck, unlike nephrite. In addition to Xiuyan jade, there are other ordinary jade posing as nephrite, and its identification method is roughly as above.
2. Distinguish nephrite from Russian jade and Qinghai jade:
Qinghai jade and Russian jade are estimated to be produced by Tianshan branch, so the ore composition is similar. This kind of jade is mostly white and looks like waxy grease, so it is easy to pass off as white jade. Moreover, its hardness is the same as that of white jade, and it can't be identified by eating a knife.
However, this kind of jade has high timely content, so compared with white jade, it is rough, astringent, brittle and transparent. Often exposed to the sun and rain, it is easy to get diaphragm, crack and change color. Especially nephrite and Russian jade are compared together, one is waxy and the other is japonica; One is white and the other is "dead white". The difference between them is self-evident. At the same time, it is not difficult to distinguish crisp sound from dull sound when knocking at the door. Jadeite is mainly represented by jadeite, which is highly respected by the public because of its bright color and rare crystal transparency. There are many fake jadeites and treated jadeites on the market, and the means of counterfeiting are becoming more and more technical. The identification of jadeite can be observed from several points: 1, ornamental light: the surface of fake jadeite and treated jadeite looks clean, but the luster of the surface gives off thief light, and the light reflection is scattered and there is no sense of cohesion; The light emitted by natural jadeite is shiny, and the light is bright when it is gathered together. This is because jadeite is a highly concentrated crystal. When the crystal mechanism is not destroyed, the structure is very compact, and the surface is like unbreakable steel, focusing light; Because the structure of pseudo jadeite is not as dense as that of natural jadeite, the treated jadeite is chemically corroded, which makes the internal unit cell loose and the loose surface can not concentrate light, so it is astigmatism. 2, look at the internal crystal: natural jade belongs to the natural crystal structure, through the light to see the inside, you can see that the crystal surface distribution is uneven, shiny; The stone patterns in natural jadeite are not clustered, but Shi Gen with veins. There are clusters of cotton in modern simulated jadeite, which can be shown as glue injection effect. 3, color: the color of natural jadeite has its color source no matter what color, it is especially difficult to tell that the other party is a piece of jadeite, which can be observed through light. The color distribution of natural jadeite is dark and light, and the color root is block. The natural color grows in the crystal and follows the stone grain. The injected color is floating, there is no color heel, and the color cannot grow with the stone grain, so it is weak. 4. Put in the water: put the jade in the water and then pick it up. The surface of natural jade can condense small water droplets, while fake jade and treated jade cannot form water droplets, and they are attached to the surface of stone one by one. The principle of discrimination is the same as looking at light. This method is the easiest to learn. 5, feel: touch jade by hand, natural jade lubrication such as silk, fake jade, treated jade feels unsmooth and astringent, this is a very subtle change, it needs more practice to achieve a sensitive feel. 6, taste: put the jade in your mouth, natural jade and untreated fake jade (that is, all kinds of crystal stones) have no taste, cold lubrication For real natural jade, fake jade can not be so lubricated, processed jade gives off some strange tastes. 7. Sculptor: Natural jadeite has a high hardness and can be carved into complex shapes. The details are exquisitely carved, and the round carvings are smooth and natural jadeite. If you see a round jade, you can be sure that it is a natural jade. The method of scraping the glass is unreliable, and some fake natural jade can also scratch the glass. 8. Burning: natural jadeite is slightly burned with fire, and there will be no strange smell floating out. After cooling, some tiny water droplets will condense on the surface; The treated jadeite will emit some unknown gases such as sour taste, and there is no water drop after cooling. The identification method of burning hair on jade is not very reliable, and the heat of tying hair with glass bottles is also constant. I hope this answer will help you solve the problem. If you have any questions, please ask. Good luck!