Hetian jade has a long history of at least 7000 years in China. It is the main body of jade culture in China. It is a precious heritage and artistic treasure in the treasure house of Chinese national culture. It has a profound cultural heritage. China is the only country in the history of the world that combines jade with humanity.
Hetian jade features one: great toughness
Toughness is extremely important for jade, and its toughness is large, it is not easy to break, and it is wear-resistant. It has great benefits for the artistic shape and fine carving of jade. Toughness is the hardness of impact, and some hardness is very high, while Hetian jade hardness is not as high as diamond and crystal, but the hardness is very high. According to the determination, Hetian jade has a compressive strength of up to 6542 kg/cm 2 .
The toughness is the grinding hardness, and the Hetian jade is a tremolite jade, and its toughness is its characteristic. The toughness of tremolite jade is the largest in jade, which is the most important feature of Hetian jade, which is unmatched by other jade. Second, it is a tremolite, the particle size is extremely fine, and it has a felt-like structure.
Hetian jade features two: for tremolite, very fine grain size, with felt-like structure
There are two types of amphibole in the world: tremolite and actinolite. Hetian jade is a tremolite, and its mineral composition is tremolite. Main features: First, the content of tremolite is extremely high, generally above 95%, of which white jade is 99%, white jade is 98%, and jade is 97% (95%-99%). At the same time, the same type of tremolite jade in the field The jadeite content is higher. Second, there are very few impurity minerals. Generally it is 1% to 3%, and more than 1%. Third, the mineral has a very fine particle size and is microscopic and cryptocrystalline. The tremolite minerals are fibrous, needle-like, and leaf-like under a polarizing microscope, and are long columnar and short columnar fibers under a transmission electron microscope. According to the measurement of some samples, the particle size under the electron microscope is: 0.0046 mm × 0.0013 mm, 0.0063 ram * 0.0036 ram, the aspect ratio is 2:1 or 3:1; the long column is 0.01 m × 0.0028 ram, 0.004 ram. ×0.0008mm, 0.012mm×0.0012ram, aspect ratio is 3:1 or 5:1, 10:1; fiber is 0.0004mm×0.000021mm*0.0021ITlnl×0.00007ram, aspect ratio is 20:1 or 30 :1. The fineness of the particle size is rare in the same type of tremolite jade at home and abroad. Fourth, the structure is typical of felt, the particle size is uniform, and it is interwoven into a felt. This is an important reason for the fine and dense texture, and this structure is rare for other types of jade.
Hetian jade features three: delicate texture, gentle
The texture is a comprehensive representation of the quality of the jade, including shape, degree of moisture, cracks, impurities and so on. Due to its mineral composition and structure, Hetian jade has determined its texture. The performance is as follows: First, because of its extremely fine grain size, the texture is very delicate, which is what the ancients called “small and sorrowfulâ€, which is beyond the reach of other jade. The second is warm and moist, that is, it has the luster of oil (fat), giving people a sense of moisturizing and softening. It is the so-called "warm and moist" of the ancients. The sheep fat jade is famous for its jade moisturizing like sheep fat. Third, there is moderate transparency, that is, “the head is goodâ€, it is slightly transparent, and the jade pieces that are formed are watery and angry. Fourth, there are very few impurities, and some reach the level of innocence, and the inside and outside are the same. It is what the ancients called "there is no cover, and Yu does not cover up", or "the corner is ignorant and can be known."
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