Hetian jade currently has two famous sources of jade: one is from Yutian County to the south and enters the Kunlun Mountains. There is a famous Alamas mining area, and now the most famous Hetian Baiyu Mountain is produced here. The other one is from the south of Hotan City, along the Baiyu River. There is a source of rich history and a rich source of jade, the source of mountain water. 1. According to the different places of production, Hetian jade can be divided into three types: sub-material, mountain water and mountain material. 1. Aberdeen: Also known as Zieryu, refers to the jade that is transported into the river by the primary mineral denudation. It is distributed in the riverbed and on the riverbanks on both sides, and the jade is exposed to the ground or buried underground. It is characterized by a small degree of smallness, often an egg type, and a smooth surface because it is a long time. It has been subjected to water _ brushing, handling, sorting, and has been ruined, leaving the essence. Or buried deep under the soil, a few different pits, full of the essence of the earth. Therefore, Ziyu generally has a good quality, because it absorbs enough and is warm and incomparable. Ziyu is divided into nude jade and leather dice jade. Naked jade is generally collected from river water, while skin color jade is generally collected from the soil of the river bed. Therefore, the age of the Pizizi jade is even longer. Some valuable jade varieties such as: jujube red, black leather, autumn pear yellow, yellow wax skin, sprinkling golden, tiger skin, etc., all come from the skin color jade. 2. Mountain water: The name is named after the jade and jade artist. It refers to the jade that is formed by the weathering and collapse of the original jade ore, and K is hit by the river water to the upper reaches of the river. The characteristics of mountain water are close to the original ore, the block is large, the edge is slightly ground, the surface is smoother, the age is less, and the jade is younger. 3. Mountain material: Also known as mountain jade, or Gaibao jade, refers to the original mine produced in the mountains. The characteristics of the mountain material are different in degree, angular and angular, and the quality is often inferior to the mountain water and the child jade. Strictly speaking, the mountain material has not been baptized by nature. It does not absorb the essence of the universe. It should be called jade, and should not be called jade. At present, the usual price, the same level of jade is 6-8 times that of the mountain. In the middle of the market, there is no skinny mountain material or Russian material. Russian material is also a mountain material and has the same material composition. Because the mining area is called Russian material in Russia, its price is much lower, and its characteristics are white but jade. The quality of the water is too heavy, and the density and oil texture are not as good as the authentic and Tianzi jade! If the Russian materials are used to fill the materials and the materials are sold, it is difficult to distinguish them from the experience. At present, there are only a lot of them in the market or online. The real sheep fat jade, there is no standard in the country, it is produced in ice and snow covered glaciers. If the sheep fat is white, it is not only white but also not anti-green. Its oiliness is extremely high. It is not the mountain or jade that can reach the sheep fat grade. Some old players have been jade for decades and are hard to find! The high difficulty of sheep fat jade and the rarity of it can be said that it is not always possible to buy a fine product if you have money. Nowadays, most of the self-proclaimed sheep fat jade is a high-white mountain jade or jade jade. If it is not skinned, it is mostly mountain material. The jade workers know that the price of the jade is several times that of the mountain, and they must try their best to keep the skin when working. Some people who try to make fake leather for the sake of posing as a jade are often seen. The skinless jade is not a jade, it must be determined by the experience and eyesight of the appraiser, so it is often controversial. Therefore, according to the same level of Hetian jade, the most important materials are the second, and the mountain water is the second. Second, Hetian jade can be divided according to jade species: white jade, topaz, sapphire, ink jade, jasper. Between the green and white is called the white jade, between the gray and white is called gray white jade, between the white jade and the ink jade is called blue and white jade. Jade contains sugar color called sugar jade (sugar jade is not just mountain material, it will form jade jade after entering the water), jade jade with different colors, there are three colored jade, colorful jade and so on. Third, the advantage of buying leather dice jade: the object is rare! Hetianzi Yu has been collected for thousands of years and has become increasingly rare. The natural splendid skin color is a unique feature of Hetian jade, and it is also a symbol of real goods. However, the fake ochre skin material is very common in recent years, the ochre is mostly attached to the surface, and there is no oil in the appearance. It needs to pay attention to distinguish. At present, there are also 10 yuan and 20 yuan of jade on the market, and there are thousands of tens of thousands of dollars. How to distinguish? The finest Hetianziyu is moist and has a sense of oiliness. It has a gentle feeling in the hands. As the saying goes, "Gold is valuable for priceless jade", because the top grade of 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 dollars, so some people will This will be mixed with Hetian jade. These jade are basically the same as the minerals of Hetian jade, but the surface color is darker and softer, and the time will be more bleak for a long time. The advantage of leather dice 1. The jade with a stamp, without controversy, can determine its value and value. 2. There is a saying in the line: "After you have gone to the skin, you can't recognize it." Mainly refers to some high-quality mountain materials (even Russian materials) can be compared with the feed, but sold by merchants at high prices, but the purchase price is several times different. Therefore, the nude jade without skin color is more controversial and difficult to maintain its value. Therefore, some people say that naked jade is controversial and cannot be guaranteed. The nude jade is black and white, and the skin color jade is a color photo. It gives the artist a full creative space and gives people a colorful artistic enjoyment. 3. When purchasing leather color jade: 1. heavy leather color; 2 heavy jade; 3 heavy process; 4 heavy material shape. Fourth, the description of the purchase of jade: 99% of the jade jade has different cracks or a small amount of impurities, so the jade is called a crack or a sputum. Generally, the large septum or the more obvious noise points will be modified when working, and the existing septum will fall within the normal range without affecting the appearance of the jade and its firmness. Like jewel-grade diamonds, most of them have small cracks and impurities under high-magnification magnifiers, which are rare in the United States. 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