Jade signed

On the definition of nephrite jade jadeite nephrite narrow definition refers only to nephrite, including Xiuyan, Nanyang jade, Jiuquan nephrite jade, and a dozen broadly. Many nephrite history as old as Xiuyan. It refers only jadeite jade. Jade nephrite jade color mainly white jade, topaz, Purple, black jade, jasper, sapphire, ruby ??and so on. Topaz which is to share such as chanterelles, Purple color is usually pale, black jade jade actually more black spots on jasper, jade is indeed dim blue white jade. Usually white best. That jadeite jade, colors are white, purple, green. Children may be referred to the ice (white) or blue to children (green). Green is the best. Three color jade is also called "Sworn Brothers" or "Gods." Chemical composition The chemical composition of jade jade mainly by sodium, calcium, magnesium, aluminum and other trace elements in aqueous silicate. Jade is formed in the crystallization of igneous and metamorphic rocks at high temperature melting re-crystallized, and jade formed by the two roles, and then by water erosion, transport and deposition after, and gravel mixed form of jade placer, ore deposition. Edit this paragraph form natural jade mode 1. Magma effects include magma intrusion, volcanic and magmatic hydrothermal post-spill periods of time. 2, sedimentation including biological debris accumulation, debris accumulation, chemical precipitation, etc. .3 supergene leaching, metamorphism which is most important causes of jade, including regional metamorphism, contact metasomatic metamorphism, hydrothermal alteration and the like. 4, tectonic rock crushing occurred under tectonic stress .5, celestial objects such as meteorites falling glass (雷公石 etc.), Murdoch Seoul stone, glass craters. Evaluation Criteria Edit this paragraph jadeite nephrite nephrite 1, the best white color, white jade is the best. Other colors are also to share. Topaz Purple Color strong is good, many good black jade dots. Intrinsic permeability jade jade color pictures (20) good. 2, the type and nephrite jade other species are also the best of the best. 3, the best history of jade. On criteria for the classification of jade, jade was considered when the Republic of jade, some people think before Han Dynasty jade jade. I humble opinion: the Ming previous jade into the jade better. 4, carving jadeite nephrite jade carving of a different focus on. Jadeite 1, the color green is best. The best is emerald green jade (refers only green yellow). 2, jade is the best kind of "glass types," also known as "hallowed ground children emerald." Very high degree of permeability. 3, than the new pit old crater pit generally good, better than the seed material mountain material and Mid-material, the material is better than Mid-Shan Liu. 4, the size of the bigger the better. Now chunks of jade rare. Evaluation of jadeite nephrite similarities and differences: 1, nephrite more emphasis on the inherent flavor of history, carving and other than jadeite. The same piece of jade (nephrite), if it is jade (nephrite) value will be much higher. 2, jadeite pay more attention to color, size than nephrite. A new piece of jade (Jade) if of good quality, higher than the piece of jade (jade) value. 3, both of which focus on "head." But Nephrite "intrinsic" Jade "flared." In the light, the color is gray nephrite jade is very bright. Of course, its different meaning. Jade seed formation: seed jade (seed material or water material) is expected by the mountains, the glaciers cracking avalanche, earthquake weathering or being washed into the river floods during the rainy season and by the long-term impact of the river scoured by millions of years of erosion formed , seed jade having been immersed in water for many years, erosion, grinding the remaining material: fine waxy, moist, high density, with Yuye of gloss, so the best quality seed jade, jade in treasures. Yurungkax: yurungkax, namely the famous ancient white river. This Heyuan Kunlun Mountains. After flowing into the Tarim Basin, and Karakash River sinks and into Khotan River, 325 km long river, many tributaries, the basin area of ??14,500 square kilometers, the river is rich in jade, jade and black jade, ancient Khotan is out The main rivers of jade. People picking jade, mainly in the middle, while the upstream because of difficult terrain, difficult to reach. After Montenegro Region (seed jade birthplace) found white, to find a partner in bringing new hope, people take risks to go. Montenegro, the ancient name of 喀朗 Kyu Tucker, the mountain is one of the main peak of the Kunlun Mountains, the peak of 7562 meters, the top of steep mountains, snow covered ground. Jade location for Agger valley UN reform, this is one of the Yulong Kashgar River tributary, about 30 kilometers from Kashi Tash village Mountain Brigade, part of the river ice sediments are widespread, and the hillside collapsed, boulders all over, only walking distance , above the snow line across glaciers and high altitude above 5,000 meters, a relatively high 600-1000 meters. The leading edge portion of the glacier tongue, near the glacier due to move to the next line gradually melting snow often found from the source to carry Hotan jade boulders. Glacier tongue up to tens to hundred meters, sunny day and constantly cracking avalanche, accompanied by the sound of thunderous giant, rolling boulder rolled down with ice, fell into the river, it can also be found under the ice jade . Once daily snowmelt flood, flood the huge ice along the river toward the bottom, the ice and the ice melted also exposed jade boulder. Output has white and black jade jade. This area should be native and Khotan jade deposits, is one of the main sources of yurungkax neutron jade. Yurungkax from Hotan city center about 20 minutes away by car. 50 km upstream of the river white seed jade, jade skin seed production generally downstream in the river. Locals after flash floods, winter leisure hours, often in the river picking jade habits. They pick up jade is mainly in the middle of the river, upstream and downstream due to difficult terrain, it is difficult to reach. And Tian origin: Hetian located in the Tarim Basin south of the Kunlun Mountains south west Sanju Tage East County, Kashi Prefecture taxkorgan safety and 阿拉孜 vigorously Tug Hill, in the warp Hetian, iron Kerry Keta. grid, Liu Shi Tage, east Qiemo County Jinshan north wing of Su Nan Aer 拉穆宁塔格. And Tianyu Cheng belt continuous length over 1100 km. In the mountains above the distribution and native of deposits and occurrences nephrite, at an elevation of 4,000 meters, the river has many precious and Tian Ziyu output. And Tian origin classification 1. Shan Liu: Shan Liu, also known as mountain jade, or call Baogai jade, that produced in the mountains of the original ore, such as Bai Yushan expected, the blue Bai Yushan material and so on. 2. Mountain water: mountain water means the original ore by weathering caving, river transport by the river in the upper reaches of jade to. Mountain water feature is from the original ore near large block of its jade surface slightly rounded edges and corners. 3. Ember: Ember known child children jade and seed material, referring to the primary ore is moving water erosion to the river jade. It is located in the riverbed and terraces on both sides, the jade bare surface or buried underground. Ember is characterized by a small block of, usually oval, smooth surface. For it is up to several thousand moving, scouring and screening, so Ember general best quality. In sub jade river downstream from a variety of colors, white seed material, green jade seed material, jade seed material, black jade seed material, seed material jasper, topaz seed material. And nephrite color: different colors and Tianyu Yu quality, can be divided into white, jade and nephrite, black jade, topaz four categories, according to a say in ruby, but so far no one. White: white in color from white to bluish white, the called also diverse, and the metaphor is also very image, quaternary gray, paraffin white, gray dawn, pear white, pale blue and so on. And nephrite jade is the high-grade jade, fragmentation is generally small. But 白玉子 is white in the finest materials, the best quality. Some 白玉子 after oxidized surface and with a certain color, Qiu color called "Autumn pears" tiger color called "tiger child", the date color called "Zaopi child." Rare species are Hetian. White by color can be divided into suet jade and green jade. (1) white jade: because of color like suet white jade, hence the name. Delicate texture, "white as cut fat", giving a soft feel just in the see. This is 白玉子 the best varieties of jade, currently only has this species in Xinjiang in the world, output is very rare, extremely valuable. (2) green jade: jade green with white tone, in faint white flashing green, flashing green, flashing ash, common with light blue, powder blue, gray, etc., is a transitional varieties of white and jade, and nephrite are more common . 2. Topaz: Topaz from the yellow to dark yellow, chestnut yellow, okra yellow, yellow yellow, egg yellow, tiger skin yellow and other colors. Very rare topaz, jade exploration in the history of thousands of years, only occasionally see, are equal in quality white jade. 3. Sapphire: Sapphire has cyan to deep blue, the color of many species, its different shades, there is light cyan, dark blue, blue green, gray-green, dark blue, emerald green and so on. And nephrite jade the most delicate meat Sapphire past two years has been the rise in value. 4. Moyu: black jade by a light black ink to which ink strip and other mostly cloudy. There are dark clouds piece, light ink light, golden mink beard, beauty should be like. In block compound, the degree of strength of different ink, the uneven distribution of dark light, more common in transition and jade, white jade. Generally full of ink, polyethylene ink blot points. Poly black or white jade finger in ink than the aggregate, can be used as pretty colors. Point ink is dispersed into a point, it affects the use. Moyu mostly small pieces, which contains more black because the fine flake graphite due. Hetian skin color classification: diamonds in the rough skin, their composition and occurrence characteristics, can be divided into color leather, sugar, leather, stone leather categories. Skin color: Hotan jade appearance distribution sub-layer of skin jade has a variety of colors. Jade circles in various colors and names, such as black child, deerskin child and so on. Skin color can be seen from the quality of Ember, such as the black child, deerskin son, and many more good material for the upper white. The same kind of quality of Ember, such as skin color with Qiu, etc., higher value. Jade skin is very thin, generally less than 1 mm. Form various skin color, some into the clouds like some of vein, some into scattered spots. The formation of skin color is due to the oxidation of ferrous Hetian converted under oxidizing conditions due to ferric oxide, so it is the secondary. Experienced pick up jade were to go downstream sub jade colored skin; and upstream to find opportunities seldom jade color leather. In addition, in the vicinity of the crack native jade ore tender it can also occasionally found in the skin of mountain material, which is also due to the formation of secondary oxidation. Crust: refers to material appearance of Hotan Yushan distribution layer of cinnamon and caramel skin jade, because of the color like brown color, it is the sugar called sugar jade jade skin. Sugar Sugar large jade skin thickness, from a few centimeters to 20 - 30 cm, often surrounded by the white or jade, was the transition relations, sugar produced in the vicinity of jade ore body fracture. Jade is a product of the oxidation of sugar environment, after the formation of lines and nephrite, the residual magma and nephrite ore body of water along the crack penetration into the result of the oxidation of ferrous iron oxide, iron oxide couverture is the result of infection. Stone Paper: refers to material appearance of Hotan Yushan surrounded surrounding rock. A white clouds surrounding rock is tremolite marble rock again when mining mined together with jade, jade attached to the surface, this package jade stone jade stone and clear boundaries, can be separated. When he was through flowing water or glaciers long-term erosion and transportation, stone and jade are separated. The other is tremolite rock wall rock. As Hetian then explained the process of formation of coarse crystalline tremolite, since the account is not complete, the jade surface often with coarse-grained tremolite, this leather and jade stone boundary transition. Called yin and yang side, nightside refers to the appearance of this jade stone. Yufu Workshop Tips for Buying and Tian Baiyu roughly to judge from the following perspectives: First View check whiteness grade enough, look at the lip of Yuye enough, that jade is delicate, waterline proportion, accounting for only one or two bar, no problem, the proportion of jade flower, were many impurities, Yumian without cracks, if you like the last look at skin color jade skin color is gorgeous, Qiu skin, purplish red leather, deerskin, sprinkle gold Leather ~~~ These are rare species and nephrite, but to prevent fake leather oh. Basically mastered these principles, I believe that you would choose a good piece of jade. 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