Turquoise has a history of thousands of years. Because of its beautiful color, varied texture and unique texture, it has always given people a simple, original and simple beauty. From the obscurity of 10 years ago, it has become a "red man" in the field of gemstone collection. With the trend that the price of the collection has only risen and fallen, the team of investment collections is growing. A large number of imitation turquoises have also appeared on the market. Experts have warned that turquoise investment should not blindly enter the market, and we should first grasp the method of authenticity identification.
First, look at color, purity
If the color is darker, more pure, and more uniform, the higher the purity of turquoise, the greater the possibility of fraud; on the contrary, the greater the possibility of real goods. Because of the unique formation of turquoise, there are often many iron wires inside, and there are traces of water erosion. Therefore, the extremely high purity of the net is very rare. Especially in large pieces of turquoise is very rare. If it is a large number of high-color, high-purity goods. 90% may be white pine injection, 9.9% may be mixed with stone, if the price is surprisingly low, 100% can be judged as imitation.
Second, look at density, hardness and brightness
The greater the density of turquoise, the greater the hardness and the higher the weight and brightness.
The heavier, harder and brighter, the more likely it is to be a cargo. But now B-injected and injection-molded imitations can sometimes meet this standard. They usually have two kinds of glue: one is made in China, but because the brightness is not too high, it is easier to distinguish; For the other imported ones, the brightness can be compared with the dipped A goods, but the weight of the B goods is usually lighter, and the white pine and the mixed stones can not be displayed. C goods are very obvious in coloring, and there are obvious spots on the convex and concave.
Third, look at the iron wire
You can separate the imitation and the authenticity by looking at the iron wire, but you cannot identify the A and B goods. Because the authentic turquoise wire texture is clear, develops naturally, and the color is more positive; and the imitations tend to be blurred, stretched and hard, and the color is not the positive color of black, white and yellow. And if its iron wire is too clear and pure, it means that the iron wire imitation is used, but it is more fake.
Fourth, smell the color
The glue smell of imitations and B goods will be particularly large. Even if it is put on for a long time, there will still be some smell in front of the nose; and A goods are not available (the dipping of A goods just made some smell, with The passage of time will disappear within a month).
Five, burn with fire
Because the imitation and B goods are filled with glue inside, the glue burns black after the fire, and it gives off a gel smell, so it can be identified by this method. A goods will not change color (dipping goods may have a little glue, slightly yellow).
Six, look at the crack
If the crack on the turquoise is too many and is too wide and long, it can be identified as B goods. Because of its poor quality, it is naturally easy to crack when the glue is exposed to high temperature; if the crack is too much, the finer, the smaller, the tighter, the white mark, 98% may be dipped A goods. If there is no crack, it can be judged as an imitation. If there are more defects, fewer cracks or no cracks, slender and tight, gray and black, it is generally natural A goods.
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