Hetian jade is hard to find, how to distinguish the good and bad of Hetian jade, and look at the following nine points.
colour
Hetian seed material is better in white. Among the four characteristics of “white, moist, fine and tough†of sheep fat white jade, “Jade White Run†ranks first. Therefore, the industry often uses image titles, such as paraffin white, white belly, pear white, white, ivory, brown rice, chicken bone white, and sheep fat white.
White is further divided into first-grade white, second-order white, followed by white and so on. The Qingbai jade in the Qianlong period was worth more than the value of the modern sheep fat jade. White is good, but if it doesn't look oily, there is no moisturizing, dead white, dry white, white water, the value of such seed will not be too high.
texture
The texture of the Hetian seed material is determined by its internal structure. The degree of detail, transparency and luster are the three main aspects that reflect the quality of jade. Good seed material is hard and fine, reflected in the perceptual knowledge. First, the appearance is very delicate, and second, it is hard and does not eat a knife. The fine jade is generally dense and has a distinct sense of hand.
The jade is not as transparent as possible. The fine jade is often tightly structured and strong, and the effect is translucent or slightly transparent. The Hetian seed material has these high-quality conditions, while the Qinghai Baiyu Mountain material has a relatively loose texture and its transparency is high.
The jade is fine and compact, and its oiliness is strong. On the other hand, if the texture is relatively loose, its grease degree is weak. A good seed should be like a fat, which should feel like a sheep fat. The oil is also sturdy and crisp, and the "intense of light" is very connotative.
shape
The shape must be naturally formed, the surface is natural, the lines are smooth, and there is a sense of easyness in the hands of natural seeds. If the day after day processing, whether it is a roller or a polished one, destroys the natural beauty of the seed material, the value will be reduced.
Cleaness
Clarity refers to the degree of cracking in the jade and the inclusion of impurities. The best is not and less cracking, and the impurities are the best. It is most important that there are cracks in the seed material that directly affect the value of the jade; the black spots or white spots in the jade are impurities, so as not as good as possible, but less is not much related, and more affects the jade. quality.
Pore
The finer the pores of the seed material, the denser the structure and the finer the jade. On the contrary, the pores are large, indicating that the looser the structure, the jade is general.
Leather color
The best seed material is no skin color, and the meat color is skin color. Because only the meat is relatively loose, it is possible to produce skin color. But such a favorite is too little. Nowadays, there are many jade friends who like to have skin-colored seeds.
There are many types of leather: crow skin, deer skin, autumn pear skin, osmanthus skin, sprinkled gold skin, red skin, tiger skin and many other varieties. The most valuable ones are "Osmanthus fragrans seed jade" and "jujube skin seed jade". The “Luhuapi†and “Coarse Red Skin†seed materials are heterogeneous and have a coarse texture.
cotton
Cotton is an aggregate of white crystals in Hetian jade seed, mostly needle-like or flower-like.
Cotton is a jade enamel that has a greater impact on the appearance of jade. Jade is superior to innocence, and cotton is flawed. Most of Hetian jade has cotton, and there is not much cotton. Generally speaking, a jade piece has a few bit-shaped cotton or sheet-like cotton, but at the edge, or on the surface of the jade rather than deep in the meat, it is good to clean when processed, and the jade is processed. The impact of the product phase is small. If the jade has cotton everywhere, or the cotton is hidden in the depths of the meat (and can be seen by the naked eye), it is not good to remove it. The price of processing value will be higher, and vice versa. At the same time, the amount of cotton is also an important indicator reflecting the cleanliness of Hetian jade. A very thin and white Hetian jade. If there are cotton spots in the meat, it is generally called "dirty" and "not clean", and the price is naturally not high.
Cleft palate
Splitting refers to all the cracks on the jade. According to the jargon, the small cracks are called 绺, the big cracks are called cracks, and they are called "cracking".
The splitting of jade material is caused by tectonic movement in the process of jade formation. Some are produced during the mining process, and some are produced during processing. According to different crack switches and distribution, they are generally classified into “dead splitting†and “living splittingâ€. "Two major categories. The dead cleft palate refers to the obvious splitting, and its thickness, length, and depth are different. The long and deep encounters are squatting, the two sides are shallow and the middle is deep, and the jade inside the jade. The active cleft palate refers to a small cleft palate. There are various kinds of nails, such as nail-like seams mainly distributed on the surface, from the surface to the inside, which are scaly-like fire-damaged, and the fine-grained hair with uniform cracks in the same direction. Wait.
In general, death is good, and it is difficult to get rid of it. Generally, it is difficult to predict the occurrence of fetal cleft palate, and other cleft palate is judged. If you are not sure whether to invade the internal cleft palate, you only need to cut a plane in the plug skin, and you can see at a glance if you die and live.
Dead stone
The dead stone in the jade meat of the seed material is integrated with the jade material. It is a pure stone. This kind of seed material is half stone and half jade. Under normal circumstances, the flashlight is used to see transparency. Without transparency, the stone in the seed material is relatively large and the value is not high.
In order to quickly grasp the quality of the identification of Hetian jade seeds, the most important thing is to get started with the real thing, more contrast, only more practice, will really appreciate the mystery.
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