Hetian is based on assessment of the economic value of purity of color and texture

Distributed in Xinjiang, Yarkand - Taxkorgan, Wada - Yutian, Qiemo County, stretches 1,500 km north slope of the Kunlun Mountains, a total of nine origin. Hetian to the mineral composition of tremolite - actinolite-based, and contain trace amounts of tremolite, serpentine, graphite, magnets and other minerals, the formation of white, blue green, yellow and black different color. Mostly monochrome-yu, a small number of any other color. Jade is translucent, polished showed lipid-like luster, hardness of 5.5 degrees to 6.4 degrees. Hetian half-cooked at an altitude of 3500-5000 m-high rock, the stripping solution for the long-divided fragments of different sizes, caving in the hillside, and then washed into the river by rain. Fall river to be dry, the riverbed in the collection of jade pieces called seed jade, mined in the rock material, said Hill. Has been found in use and Hetian jade produced in the earliest times, from the tomb of Fu Hao Yin Ruins. After the Spring and Autumn, and Tian-yu before gradually become the main, are gathering material, to the Qing Dynasty before Material mined mountain. Zhuo Qing Dynasty Emperor Qianlong during the flood control system of Yu Yu-shan, jade was re-10007 over a hundred pounds, that is collected from the dense Retaillau the mountains.

Hetian is based on assessment of the economic value of purity of color and texture, its main products are:

① Bai: flash transparent stone with more than 95%, color white, texture, pure, delicate, moisturizing gloss for Hetian of the excellent varieties. In the Han Dynasty, the Song dynasty, the Qing Dynasty jade boom a few, have attached great importance to material selection, high-quality white jade is often carved as a "heavy machines."

② suet Bai: Bai in the top grade, pure, delicate texture of rock permeability with flash up to 99%, color white, was like a subtle DiorSkin gloss, weighs as much as jade, its economic value several times that of white jade. Han Dynasty, Song Dynasty and the Qing Emperor Qianlong era are very respected suet Bai.

③ Qingtian Jade: jade texture with no significant difference, only faint jet-white in the pan-blue green, for the three Hetian jade material, the economic value slightly inferior to white jade.

④ Sapphire: color TANSEI, green, gray and white, both said sapphire, color, Yun Jin, texture delicate, transparent stone with flash 89%, actinolite 6% was fat-like luster, is abundant, is ancient jade collection or extraction of the dominant species.

⑤ Topaz: The base system is a white jade, iron oxides of long-term surface water infiltration in the cracks formed in the yellow notes. According to color change to be known as: dense sallow, maroon yellow, okra yellow, yellow yellow, egg yolk and so on. Chroma thick dense sallow, yellow chestnut extremely rare, and its value capable of reaching the suet Bai. In the Qing Dynasty, due to Freshwater pearls Topaz and the "Emperor" homophonic, but also extremely rare, once the economic value of more than suet Bai.

⑥ Sugar Jade: transparent stone or iron oxide penetration flashing different shades of red hull, dark red called "candy jade", "tiger jade", white slightly pink called "pink jade." Sugar-Yu Chang Yu Bai, or So Yuk-shing, said two-color jade material, can be made, "Qiao-color jade." Jade leather sugar made from hollowed snuff bottle engraved with seed material, referred to as "gold and silver wrapped" can also proliferating.

⑦ Moyu: flash permeability rock clip graphite, magnetic component that is black, black jade are mostly gray or gray ink black markings Jade folder, according to life form as "dark clouds films, light ink light, golden mink shall beauties coming from the other . a black spot, said heavy-intensive pure paint ink Moyu value higher than other varieties. Moyu was waxy luster, its color should not be carved ornamentation uneven, multi-used utensils made of gold and silver inlay.

⑧ Jasper: jade ore produced in the Junggar, also known as the Tianshan jasper. Gray-green, dark green, dark green, dark green color of varying pure. This material there are dark spots, black spots, or poor quality of sand in a file, jasper stone with flash more than 85% penetration, texture delicate, translucent, showing oil sheen, for middle-grade jade.