The physical properties of nephrite

The basic properties of nephrite
1, color
In addition, and nephrite, the domestic and other parts of relatively simple soft jade color, mostly green, called jasper. The color tone of Hetian more self-contained. Hetian white, blue, yellow, black and other four basic colors, there are jewelry supplier some transitional colors, such as the Qing Baise, gray and so on. Ancient Chinese Literature, "Yi Men Guang Du," writes: "Khotan jade has five colors, white color of cakes are the most expensive, cool colors, oil colors and heavy spending by key times; yellow, such as Li are as expensive, worth Ganhuang Yu, Jiao yellow second; jasper and the color blue as your blue indigo who is or has fine ink star who followed those pale; black jade and the color of paint, but also that of the black jade; red jade, such as comb, rare earth; jade green line, in rice mix are a plus; Gan Qingyu TANSEI two yellow color; vegetables such as jade green lettuce leaves non-blue color of non-minimum. " These colors and Ancient Chinese "five elements" theory in the blue red yellow and black match. To make and even more mysterious and precious nephrite.
2, the hardness
It was determined, and the hardness of nephrite 6.5-6.9, slightly different in different species. In general, young and hardness of slightly more than white. Yutian County, such as hardness of 6.5-6.7 Elamasi white, green white china gemstone jade for the 6.6-6.8, jade is 6.5-6.9. Foreign and nephrite nephrite similar hardness, such as New Zealand nephrite mostly 6.5, individual up to 7. Sato hardness of jade is very important. Hardness of jade, polished and good, easy to make shiny jade, but also to facilitate collection.
3, Toughness
Length refers to the inherent toughness of jade binding capacity, that is, to outside pressure or crushing force of resistance. Common units of kg/cm2 compressive strength toughness, said. Such as the compressive strength of the Russian Nephrite 7759, China Hotan jade green for the 6541. Foreign countries are divided into five china gemstone wholesale toughness, that particular class, excellent grade, good grade, good grade, very poor level. Are special class of soft jade toughness, compressive strength than steel large, second only to black diamonds.
Nephrite toughness greatly felt like its unique internal structure. Toughness greater the precision of the polish master good for small birds. Therefore, you can use and nephrite carving out a high rare artistic treasures.
4, transparency
Refers to visible light transparency through the degree of transparency jade industry, called "head", "to child" or "pit." Transparency and good "the head foot," "to sub-Ling" or "pit spirit", otherwise known as "no head", "to sub-stuffy" or "pit boring." Identification of jade transparency, according to a certain thickness of the perspective of other objects of clarity, can be divided into the clear, translucent, micro-transparent body, non-transparent body of four levels. And nephrite are micro-transparent body. Thickness in general, through light, but not see the images. If the white ground to 2 mm thick, it becomes transparent. But this kind of moisture lost the feeling of white jade. Therefore, the process should not be on the white goods Zhuo too thin, but jade can make eggshell crafts.
5, gloss
Luster is the reflectance of Bao Shi Duiguang. The ancients said, and nephrite "Warm and Ze" is the gloss with a strong grease, gives a moist feeling. This gloss is not strong nor weak, neither light of the crystal clear sense, there is no low-light texture of wax, people view the comfortable feel of the Run America. Jade is such a famous mutton fat jade. In general, the more pure jade texture, luster better; impurities, the gloss on the weak, of course, also correlated with the degree of polished jade.
Hualien County, Taiwan Province of polished nephrite cat's eye have a unique effect.
6, the proportion of
And accounting for 2,9-3.1 Hetian, floating in Diiodomethane.
7, other properties
Changes on the performance of Hetian inert hot and cold in winter, no ice hand, do not feel the summer heat, so close that people like to wear. And nephrite as musical instruments or chimes, the sound clear and long,