The so-called Tian Huang, as the name suggests, is the yellow color stone produced in Shoushan Tiankeng. In general terms, the output of Tian Huang is not low, and there are also many old yellow pieces and seals left in the folk. However, it is worth reminding that the quality of Tian Huang is very different, and the difference in value is large and cannot be generalized. And it is worthy of collection and high-priced investment. It is only a few of the characteristics of Tian Huangzhong, and all aspects are excellent and impeccable top grade. To taste a top grade Tianhuang stone or Tianhuang seal, at least have the following points: Color: Since it is Tian Huang, the intuitive first sight should be its color -- "yellow", which must be placed in the first place. Because the yellow color is the true color of the Chinese nation, it is the national color. The "yellow" and "the emperor" are also blunt words, and the emperors of the feudal society are on the sidelines. The original stone will undoubtedly be respected by the rulers of all ages. Therefore, Tian Huang's "yellow" requires the yellow to be pretty and pretty, the yellow to be beautiful and eye-catching, and the yellow to be bright and bright, like a golden splendid. If there are wrapped cortex layers outside, such as "silver bag gold", "golden package silver", "crow skin" and other varieties, it should also require large color difference, yellow and white, black and yellow clear. Some of the colors are dull, turbid, and the variegated or fuzzy color of the field yellow, even if the texture is good, the block is big, it can not be said that the top grade Tian Huang. Quality: The quality of Tianhuang is generally based on the “six-de†as the standard for appreciation and judgment, namely, fine, clean, warm, moist, condensed and greasy. The top grade of the yellow, can be condensed, fat, transparent, pure, delicate as a whole, Baoguang overflows. Hold it in your hand, like the skin of an infant, it is tender and delicate. In normal times, even if it is not cured, it can be kept moist and has no dry feeling. At the same time, the top grade of the yellow, the texture should be beautiful, the road should be less and lighter, such as the presence of a cortical layer, should be thin and fine. Shape: Stone or seal is superior to the tall and square. However, Tian Huang "has no roots and shackles". When unearthed, it is oval, and most people cannot bear to take the square. Then, if it is elliptical, it should be as full as possible, round, and regular, and the ratio of length, width and thickness should be coordinated. Those short, small, sturdy, thin, angular and pointed, unrestricted, purely for the weight is not worth the high price of Tibet or investment. In terms of form, rather than being small and chic, don't choose big and mediocre. Workers: In addition to the above three points, Shangpin Tianhuang must have a production process. As the saying goes, jade is not a weapon, and Tian Huang is no different. Even the high-quality Tian Huang, if not carved, no buttons and no work, at best, only a piece of fine stone, one stone. Fire Doors With Windows,Fire Rated Glass Door,Fire Rated Door With Window,Internal Fire Door With Glass Foshan QI'AN Fireproof Shutter Doors Co., Ltd , https://www.qianfiredoors.com