Emerald c goods are artificially colored and dyed jade. The value of jade is mainly determined by its color. Therefore, some people have dug up their minds and tried every means to improve the color of jadeite in order to obtain high profits. There are many different methods for making c-goods. At present, there are mainly methods such as dyeing, ochre, and radiation color change. c goods jadeite originated very early, at least in the 1920s and 1930s. Early use of a chrome-containing green dye is not difficult to identify with a Charles filter (the color turns red under the Charcoal mirror, or purple-dark red). However, the c-products produced in modern times have not used chrome-containing dyes and switched to organic dyes, so the Chrysler mirror is powerless. However, it is a dyeing product after all. As long as it is carefully examined, it can be found that the surface of the surface is more green, and the more it goes inside, the lighter it is; sometimes it can be seen that green like a spider web is generally distributed along the edges and cracks of the particles. In addition, some of the refractive index will also change slightly (affected by the dye). If it is roasted with fire, it will also change color and emit odor. c The color of jadeite is generally not durable. It will fade in half a year and one year, and it will last for several years. In addition, dyeing is known not to be limited to green, but also to red and purple. c goods production method Dyeing: Before making the jade c, wash the jade (washing the oil), then put the jade on the towel to warm it, mix it with the iron mineral for about 15 minutes, let the tissue expand and open, and then immerse in the chemical dye solution. As in the inorganic chromium salt solution, and continue to warm. After the first dyeing, the color is only attached to the surface of the emerald and looks very "floating". This process is repeated several times, so that the dye can slowly penetrate into the gap between the jadeite particles, or enter the jade cleavage micro-crack, which looks like a face. Uniform color, sometimes enough to be true. In recent years, there have been counterfeiters using laser technology to dye jadeite. The treatment method is in the unobtrusive places of jade mouthpieces, pendants and other accessories, such as micropores on the back of the ring face, injecting coloring agents. Then, the micropores are sealed with a resin. This kind of treatment is observed from the appearance of the jade, the color is very good and has a certain depth, it seems to be "colored root", because the laser hole is small, the naked eye and the 10x magnifying glass are not easy to detect. Only by increasing the magnification can you see through careful observation. The most jadeite is dyed green, followed by violet. The artificially dyed jade is beautiful, but it will be lightened by the influence of time, light and temperature, or the shape of the color will change, which will adversely affect the aesthetics of the jade. Twilight: Twilight is actually a heat treatment method that makes the jade appear beautiful red. Chinese people love red, think red means auspicious and festive, but natural red jade is rare, occasionally red, but many are mixed with brown, brown. The process of twilight is: first use yellow, brown or brown jade, clean it with detergent; second, slowly heat the jade in the furnace, and carefully observe the change of jade color. After a period of warming, the color of the jade slowly changes. When it becomes the color of the pig liver, it begins to lower the temperature in the furnace, so that the jadeite after cooling appears red. In order to make the red color bright, the jade can be immersed in the bleached water for several hours, so that the coloring matter is more fully oxidized to appear red. In the past, the twilight jade was a c-goods, and the new national standard classified it as an optimization process. Irradiation color change: use y-ray or high-speed particles as the radiation source to bombard the low-end jadeite to make the color darker and better, such as brown, green or purple. The color produced by irradiation is often spotted and uneven. The areas where the irradiation is concentrated are darker in color, while the other parts are lighter in color. This method is a high-tech method that requires certain experimental and equipment conditions for production. The irradiated jadeite must be identified by a higher level of appraisers. c cargo identification characteristics C when the goods are artificial coloration, staining the product, so we recognize jade c goods, focusing on the "color" the word efforts, to make the color carefully observe, analyze and judge. c goods have the following characteristics: â‘ observe at first glance, you think the color is exaggerated, incorrect and unnatural. â‘¡ against the light, observed in transmitted light, or a magnifying glass and observed under a microscope, can not find the color distribution within the crystal jadeite, but adhere to the outer jadeite minerals, or deposited, adhered to the micro-interstitial emerald, often has a mesh agglomerate distribution, no color root. If its bubble into water or immersed in oil (oil better refractive index 1.66) was observed, it is more apparent. Color root is a phenomenon of color generation. Take green jade as an example. Its strips, flakes, clumps of green, and the depth of the color have gradual characteristics, gradually deepening into the jade structure, the interior of the structure, or a certain piece (block ) Deeper green, gradually transitioning to lighter green. Color root is one of the characteristics of judging whether jade pieces are jade or jade, but high-grade jade, such as jadeite in old pits, because the color is very uniform and the structure is very delicate, so it is impossible to see or see the roots. . 3 Emerald c goods have a thicker surface, the more inward it appears lighter, or in the cracks of the jade pieces, the rough tissue, the color is obviously deepened or stacked. â‘£ Jade staining agent for inorganic chromium salts dyed using Charles filters viewed under incandescent light, emerald green goods c becomes pink, pink, reddish brown or colorless. However, there are more and more methods of falsification, and more and more high-tech. In many cases, Charles filter has been unable to identify c-clay, and jadeite dyed with organic dyes does not change red under the color filter. Gray-green, it is more deceptive. 5 Irradiated jadeite, observed under the microscope or under the lamp, can be found that the green of the jade is surrounded by the surface, which is distributed in a band or plaque. This c emerald becomes purple-red under the Charles filter, with hydrochloric acid or Bake it over to make it fade. The jade treated with this kind of method has a bright green appearance and good transparency. However, the green is blue, and the surface of the jade piece has traces of bombardment. The bombardment is compared with the unexploded area. The surface of the former is darker than the surface of the latter. . 6 It is difficult to distinguish between natural red jade and ochre red jade, because the red color of both is caused by trace iron ions in jadeite, but the natural red jade has better transparency, and the red part has stronger gloss. "Ling" gas, and the color of the twilight is red, thick and uniform, because the natural coloration process is slowly formed in nature, and the artificial color is changed sharply in a short time. 7 Drop a few drops of dilute hydrochloric acid on the surface of the dyed jade, or scrub the c-clay with a cotton ball 蘸 “去å—çµâ€, the green or purple color is removed or faded (but the enamel, radiation-induced jade c goods are invalid) ), and the cotton ball will turn blue; soak the dyed jade in water of 80 ~ 100 ° C for more than 10 hours, the water will be green, but the high quality dyed jade will not pollute the cotton ball and water. Nowadays, there is a kind of jadeite c in the market which is colored with green polishing powder. Its production is to choose a loose and rough natural jadeite. In the polishing process, the toner with a small viscosity penetrates into the pores and gaps of the jade pieces, which improves the color of the jade jewelry. 100% Polyester Microfiber Fabric Printed Pigment Printing Fabric,Polyester Bed Sheet Fabric,Polyester Microfiber Fabric Printed,100 Polyester Microfiber Fabric Printed ZHEJIANG HONGFENG SCI-TECH CO., LTD , https://www.hfmicrofiberfabric.com