Based on the high value of jadeite and the popularity of the people, some "stones" similar to jadeite are sold as jadeite! In fact, you and I are clear about this kind of thing, that is, some unscrupulous merchants bully some people who do not understand the relevant jewelry knowledge. ç‡çœŸD, the following "stones" are all very similar to the appearance of jade, do not buy these "stones" as jade! Green garnet Green garnet beads Garnet is the easiest to confuse with jade. From the naked eye, the interior of the garnet has a granular composite structure, and there is no filamentary or cotton-like laminated fibrous structure of jadeite. Moreover, the garnet is far less transparent than the emerald, and the surface often has spotted black spots, while the jade does not. Garnet is also more important than jade. The public buys a gemstone and can carry a simple color filter. The green jade is still emerald green under the color filter, while the green garnet emits a distinct red light. 2. Dongling Jade Dongling jade bracelet Dongling jade, also known as Dongling stone, was first produced in India, hence the name "Indian jade". There is also output in Henan, China. Some people call it "Miaoyu", but the correct name should be Yaojing. The differences between Dongling jade and jadeite are as follows: (1) With the perspective light, it can be seen that there are parallel green chrome mica sheets in Dongling jade. Sideways, often form a "green line." The green chrome mica appeared red under the Charles filter. 2 The proportion of Dongling jade is 2.65, which is much smaller than the proportion of jade. It can be measured by hand. 3 The average refractive index of Dongling jade is 1.55, which is lower than that of jadeite. 3. Water foam Water foam flower bracelet The China-Myanmar border often sees white, transparent or translucent "ice" jade, which often comes with blue or blue-green flowers. The color is generally white or off-white, with less white spots and spots, uneven distribution, and a dull blue tint. This kind of jade is called "water foam stone" in Yunnan, and it is called "blue flower under water" with a shade of blue. Its appearance is very similar to the watery jade of the head, especially the variety of floating orchids. The main mineral components of water foam are albite and a small amount of pyroxene minerals and amphibole minerals. Its coloring matter is an actinolite and an epidote in a certain direction. The "blue flower" in the blue flower is amphibole mineral. It is a very important feature to use a magnifying glass to observe that it is not green, contains more stone or white cotton, and has a good head. The overall color is gray or white. The hardness of the water foam stone is 5.5~6, and the specific gravity (2.57~2.64) is much smaller than the specific gravity of the jadeite (3.32). The refractive index was measured to be 1.52 to 1.54. The sound of the knock is dull, not as crisp as the emerald. If you use hard minerals to scribe raw materials or semi-finished products, such as crystal scribing, water foam is easily scratched, and jadeite is difficult to scribe. 4. Dushan jade fake jade Dushan jade Nanyang Dushan jade is an ancient variety in China. It contains more zoisite. The hardness is basically the same as that of jade. The color, texture and specific gravity are similar to those of jadeite. It is very easy to be confused. The main differences: 1 jade color is pure green, Dushan jade color can be divided into two categories; the water head is more blue, the water head is insufficient, the green is more yellow, the color shape is different, and the two are simultaneously loaded with monobromobenzene. Inside, Jadeite only sees the whole edge, but Dushan jade is clearly visible in bromobenzene; the two are placed in diiodomethane, the emerald is suspended in the center, while the Dushan jade rises and floats on the liquid surface; 2 Dushan Jade is difficult to have snow flakes, mosquito wings and other scorpion, and sometimes there is a small tip of light, but scrutiny found in jade is different; 3 Dushan jade is 2.9, lighter than jade. 5. Green agate fake jade Green agate bracelet The main difference between green agate and jade is: 1 green agate green flashes blue, with evil color, uniform color, one color, no obvious color shape, color source; 2 green agate has no green flash characteristics; 3 green agate fracture is Semi-shiny mouthwash, shell-like; 4 green agate specific gravity 2.65, also significantly lighter than jade. 6. Australian Jade (Malay Jade) Australian jade (Malay jade) safety buckle Australian jade is a kind of green chalcedony, which is more jade than agate. The main differences are: 1 Australian jade's bright green is yellow and transparent, uniform color, no color shape and color source; 2 Australian jade is also green Performance; 3 Australian jade fractures are staggered to flat. The jade fracture is also jagged. But there is a green flash; 4 Australian jade has a specific gravity of about 2.6, which is lighter than jade. 7. Jasper pretending to be jade Jasper brand Jasper (referring to the jasper in nephrite) is easier to distinguish from jade in general. However, the color, hardness, specific gravity, etc. of the good jasper are not much different from jadeite, and it is easy to be confused. The main difference; 1 jasper no snow flakes, mosquito wings and other green performance; 2 jadeite generally does not have black spots, when there are black spots, it is also more round points. Jasper rarely has no ink spots, and the shape is mostly irregular and angular; 3 emerald color is bright green, jasper color is more dull, no grandmother green tone. Jade has a color-colored source, and there are green ribs; jasper is more uniform in color, no color-colored source; 4 jade bottoms show more crystals, and jasper texture feels smooth and soft. 8. Material stone fake jade Imitation glass-like jade products This kind of stone is green glass, burning material or porcelain, etc. It is also a common jadeite product. The main difference is: 1The color of the stone is green but it is stagnant, although it is transparent but less crystal. The color shape is unnatural, it is agitated, uniform or spotted; 2 the stone is glassy, ​​the fracture is bright and shell-like; the jade is jade, the fracture is dark and jagged; 3 the stone often has obvious bubbles, and The jadeite body is obviously different; the hardness of the stone is 5.5-6 lower than that of jadeite, and the specific gravity is also light. The best jade Common knowledge of jade: The proportion of jadeite is between 3.25 and 3.35; Jade Mohs hardness is between 6.5 and 7; Emerald refractive index: 1.65 - 1.67, there is a relatively blurred shadow boundary near the 1.66 on the refractometer (point measurement is usually 1.66); Emerald luminescence: Light-colored jade emits dim white fluorescence in long-wave ultraviolet light, and no response under short-wave ultraviolet light. Let us introduce what is the A cargo of Bade, B and C. Because the so-called jade "A goods", "B goods" and "C goods", etc., are common names in the industry and are not clearly recognized in the national standards of jewelry and jade. Natural A jadeite, a jadeite product made from pure natural jade stone as raw material, processed in the finished product process without chemical method and only by physical means, namely mechanical processing means such as cutting, grinding, engraving and polishing. Natural germplasm, moisture and green color are always forever. The following is a non-natural jadeite that the "Jewelers Association" reminds you not to buy. B goods on the market refers to the chemical treatment of jade raw materials, such as soaking with acidic solution, dissolving impurities in jadeite, and filling high polymer, destroying the molecular structure of jadeite. This makes the jade suddenly feel hydrated and transparent, but in fact the jade is not natural and not delicate, and the weight is reduced. Slightly hit it, the sound is boring and it loses its crisp sound. In two or three years, due to the aging of the filling material, it gradually loses its luster and is covered with cracks. Another common C product on the market, the middle and lower raw materials that have been physically and chemically treated, are dyed goods. The color is added by artificially adding a foreign dye method, so that the original colorless, greenish lighter or greener colored jade changes color, and this high temperature will decolorize. The picture below shows the C-Bracelet purchased by the guests at the tourist attraction. Under the ultraviolet fluorescent lamp, the whole body is flooded, and it is obviously filled with color. It is like a light stick. Rayon Emb Fabric,Rayon Embroidery Fabrics,Top Material Rayon Fabric,Dyed Plain Blue Rayon Fabrics ZHEJIANG HONGREN PRINTING & DYEING CO., LTD. , https://www.cr7textile.com
November 06, 2021