Hetian Yuyu's experience in selecting materials
Whether a piece of jade can be used as a jade for making jade, not only for mineral identification, but also for process identification. Process identification is the material selection in the process of Saitama. China has a long history of using jade articles made by Hetian jade, and has accumulated rich experience in process identification and Tianyu.
First, texture
The texture is the nature of jade, including shape, texture, moisture, cracks, impurities, etc., is a comprehensive performance. According to the experience of using and jade jade, the craft industry has always used pit, shape, skin and sex to identify the quality of jade, especially the quality of the texture.
1. Pit
The pit refers to the origin of jade. Although Hetian jade is produced in Xinjiang, the quality of jade is different. Hetian Yushan is produced in the mountains, and is divided into jade species by mine pits. In the past, the famous jade mine pits have:
Yujiakeng: It is located in the Alamas jade mine in Hetian County. Most of the materials are white and moist. There are also some green ones, and the quality is also moist. In the production, it can be turned into white. This pit is mostly of high quality material, and the seed is very famous.
Yang Jiakeng: Also in the Alamas Mine. The color of the discharge is white and moist, the texture is flawless, and the sputum is obvious, which is also a good material.
Kayukeng: The mountain material produced in the county. In the past, there were white mouth materials, yellow mouth materials and green mouth materials, which were firm and firm. In addition, Hetian Black Mountain Ta Shizhai produces Ziyu.
At present, with the change of mining, many mine pits are not the original pits. Therefore, the pit mentioned in the process is actually a reflection of the quality of the jade in the place of origin.
2, shape
The shape of the shape. As mentioned above, it can be divided into three types: mountain jade, mountain water and sub jade.
Shanyu jade: Also called 碴å玉, if an item is broken, there is a mouthwash, which means irregular block. The quality of mountain jade is not as good as that of Ziyu.
Mountain water: better than the mountain material jade, and second to the child jade. The color inside and outside of this material is the same, and the inside can be seen from the outside.
Seed jade: ovate, all in size. This material is of good quality and the internal texture is known from the outside.
The shape is an important condition for the current Hetian jade process technology standard. The trade is divided into seed jade and mountain material, and the price is different.
3, leather
The skin refers to the outer skin of jade. The craft is crowned with jade in various skin colors and used to judge jade. White skin, black skin, red skin (or tobacco pouch), autumn pear skin, deer skin and other seed jade, the skin does not invade the interior, the interior is still white, as long as the run is good. The quality of the reed skin and the coarse red skin seed jade.
4, sex
The nature of the process industry refers to the performance of jade defects, including cracks and impurities. A piece of jade should be delicate and moist, perfect, that is to say, there is no sexual performance. The most beautiful sheep fat jade in the world, in addition to white color, is as delicate and moist as sheep fat. The same is the fat jade, the degree of whiteness of each jade is different, the degree of moistness is different, and the degree of sexuality is different. Therefore, it is necessary to carefully compare and identify.
In terms of fine texture and moisture, there are many terms used in the craft industry to express defects, reflecting the quality of jade as saying “yinâ€, that is, jade has a dark feeling; “oil†is the oily feeling of non-condensate; “tenderâ€, that is, transparency Big but not spiritual, with a delicate feeling; "dry", that is, not moist; "porcelain", that is, like porcelain. With these performances, the quality is not good. Fine and moisturizing is the main basis for the identification of jade. People love jade also like its moist nature. Therefore, the identification of fine texture and moisture is very important.
The impurities of jade are sexual. Process impurities refer to unevenness in stone and texture. There are few stones in Hetian jade, but stone will affect quality. The crack of jade is called splitting. The process is divided into two types: dead splitting and live splitting. Dead cleft palate refers to obvious cleft palate, and its thickness, length, and depth are different. Live splitting refers to small splitting and there are various kinds. In a piece of jade, there are often good textures, and some have poor texture. The craftsmanship called this phenomenon called jade and yin and yang.
Second, the color
The color of jade is very important in the process identification. The color identification of Hetian jade, one is color, the other is pure color, and the third is color. The color refers to the color, the color is pure, the color is pure, there is no other color, the color is thicker and the color is darker. The observation of color should be carried out under natural light.
Hetian jade color has four basic colors: white jade, topaz, sapphire, and jade. White jade and topaz are the most precious.
White jade is a high-grade material, which is characterized by pure quality, oiliness and whiteness. The most precious is the sheep fat jade, its color is white as fat, and the texture is extremely pure and extremely moist. Secondly, it is white jade, the color is also white, and the simple and moist is not as good as the sheep fat jade, especially the poorerness. White jade is best in pure white.
Qingbai jade is a variety of white jade. It is light green in color and white, and this color is not as good as white jade.
Topaz is a very rare variety, with the color of yellow and delicate, the most precious of the fat, the quality of other impure topaz is slightly.
Sapphire is the most common variety. The color depth changes greatly. Because the cyan is not as good as white, the price of sapphire is lower than that of white jade.
Ink is black and relatively rare. Generally, there are many ink components in the whole block, and the distribution of the depth is not uniform.
In the process identification and the color of the field jade, pay special attention to the pretty colors, such as the skin color of the jade and the pretty color of the jade. The beautifully designed and made products make the products vivid and interesting, giving the products a vivid form.
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