Hetian seed jade is the real emperor jade, and is also the material of choice for Hetian jade collectors. At present, due to the non-renewability of seed jade, the limited production, the limitation of mining, the wide range of collectors, the increasing value of the skyrocketing and the blindness of the players, the real seed jade raw material and seed jade The share in the jade market is less than 10%. As a result, the seed jade that caused the fraud has become more and more popular. The characteristics of Hetian jade seed jade: Shape: Hetian jade seed material is generally not too large, the shape is similar to pebbles, no angular, round and smooth, the most common seed material is a few kilograms of weight, and then it is rare, after thousands of years of picking The blockiness of the seed material in the river channel has become smaller and smaller. Texture: The texture of Hetian jade seed material is more delicate and dense than the mountain material, because under the power of the river, the looser part of the jade is taken away, leaving the hardest part of the jade, and the river is washed away. It is equivalent to long-term friction, making the jade more oily and compact. Skin color: Whether the real seed jade is native or secondary, they have experienced hundreds of millions of years of erosion in the riverbed. They generally enter the color in the soft skin of the skin, and deep into the texture in the cracked place. The color is deep and shallow, and the color on the crack is from shallow to deep. This color is excessively natural and has a clear layer. The skin and flesh have the same luster and texture, just like the one exuding from the flesh. The texture of the dense seeded jade is less, even if it is, it is a little bit of a star, or in a small crack. Pore: The so-called pores mean that no matter how delicate the seed jade has undergone thousands of years of experience in the natural state, it will form numerous dense holes on his surface, much like human sweat pores, which are generally not artificially forged. , metering or looking under the magnifying glass is very clear. Hardness: Hardness as used herein refers to the relative hardness or Mohs hardness of jade, which is a scratch hardness. Mohs hardness is divided into 10 grades, grade 1 is the softest as talc, and grade 10 is the highest as diamond. The specific grading standards are as follows: talc 1 degree, gypsum 2 degree, calcite 3 degrees, fluorite 4 degrees, apatite 5 degrees, feldspar 6 degrees, quartz 7 degrees, topaz 8 degrees, corundum 9 degrees, diamond 10 degrees. The hardness of Hetian jade is generally around 6.0-6.5. A typical steel saw blade has a hardness of 6.0 and a glass hardness of 5.0. The texture of the skin color thin jade has a high hardness, generally around 6.5 Mohs, with a small steel saw blade is absolutely unmovable; the texture of the pine color is thicker, the hardness of the real seed jade is slightly lower, generally in the friction Around 6.0, you can use a small steel saw blade to swipe a little. Fake seed jade features: First, it is used to color the seeds and jade In this case, most of the jade, stone and inferior mountain materials are also useful for mountain materials. They are placed in a roller machine and ground in an oval shape, much like a seed material, and then colored. This color generally floats on the surface, that is, after polishing, his color also floats on the surface, and there is no transition relationship with the meaty joint. It is unnatural, most of which is red and yellow, and some materials are very transparent, mostly using Qinghai. Materials, these materials are basically free of sweat pores and are easier to identify. Second, it is used to color the high-grade seed jade with low-grade seed jade. The first category is to make the fake jade color of the low-grade seed jade that is not very good. The consumer will judge the seed jade with pores, and then be attracted by the gorgeous skin color. This kind of leather color is still floating on the surface, or similar to icing, which is different from the level, especially the ginseng and jujube skin, which should be carefully discerned. The second category: the fake skin color on the superior seed jade, so as to achieve the purpose of bright skin color, double the price, also known as "strengthen the skin." These fake skins are well-defined, and they are really fake. It is extremely difficult to distinguish! Sometimes the experts will be confused by these skin colors. The feasible way is to use strong light to reveal the inner twilight, and observe whether the color inside and the color of the outer skin color are inside. Consistent and bright green skin on the outside have no guilt and echo, especially the emergence of bright red dates should be taken care of. The third category: is to make fake skin color on high-grade seed jade. He uses natural minerals that produce seed jade color to make various kinds of skin color in a short time. This skin color is also difficult to distinguish. This kind of fake skin color is also a "leather" to some extent. In general, the recognition of Hetian jade generally requires more physical observation, more hands-on, more reading, more Internet access, and more expert questions. In the identification, it must be determined according to his five comprehensive indicators of fineness, oiliness, hardness, pores and skin color. No matter which one is doubtful, it must be repeatedly pondered and then pondered. If you only draw a conclusion from a certain indicator, you may be deceived. 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