About five species of Chinese jade

Brief Introduction of the difference between the five jade plants
Lan Tianyu
Produced in Lantian County in Shaanxi Province. Lantian jade appearance of yellow, light green, opaque, as the Mohs hardness of 4 degrees. Transparency is a serpentinized pyroxene class. Lantian jade mining has a long history, found in Han Dynasty, Zhang Heng, and Ban Wen Fu records. Jade mines are still producing. Due to limited output, the Han dynasty, around and Khotan jade are used as jade. So Lantian jade mining and applications are gradually lost. Song Ming as well as be stars in the "Heavenly Creations" said Lam Tin to Conglingxi (Kunlun Mountains) alias, Lam land for the storage and transportation such as jade inference. Geology department told the Lantian jade mining is still carried out the inspection. According to china gemstone supplier, vice president of research Yi-Ping Ao, Xianyang, Shaanxi Maoling unearthed near the large "Animal Mask Tamasuke first" use of Lantian jade is produced, we can see the blue Tianmei Yu Han and Tang were praised at the time of origin is near the capital.
Nanyang Jade
Nanyang jade mining area is located in Nanyang Dushan County, also known as "Dushan" the "independence of jade." Nanyang jade jade for the class of plagioclase, fine texture, pure, shiny with grease or glass, polished performance, transparent or slightly transparent. Hardness of 5.5 to 6.5 degrees. Nanyang jade for the multi-color jade. Common to two or three or more composed of multi-color jade color, bright color, are called: water white, white, Wu Bai, jade, green jade, sky blue, jade, jade, jade, purple jade, light brown jade, topaz , Huang Rongyu, black jade and jade and other variegated. Nanyang jade mining has a long history of Shaanxi Shenmu hilly neolithic stone Longshan Culture jade axes, jade Yin ruins discovered in 1952, 1976, jade excavated from the tomb of Fu Hao has been found to Nanyang jade as jade example. Mission is now on display in the North Sea city of the Yuan Dynasty jade urn ditch Alexander, also with Nanyang ownership and mortgage system. Offer records, Nanyang jade mining has been a considerable scale in the Han Dynasty. So far there are over 1000 ancient mountain alone Caiyu of mine, we can see the history of Nanyang jade mining as long as the scale of Sheng. Abundant Nanyang jade reserves, scale of production can still be formed.
Jiuquan Yu
Pulse produced in the Qilian Mountains, Gansu, which is known there Qilian Yu. Serpentine jade is a family. Translucent, green is more uniform with black spots. Hardness of 4.5 degrees to 5 degrees. Jiuquan jade mining history can be traced back to the Neolithic period, unearthed in Wuwei Goddess Taiwan Qijia culture, fine Bi, that jade is made of Jiuquan.
Xiuyan
Due mainly grown in Liaoning Xiuyan named, also known as cave jade. Is a serpentine, formed in magnesian carbonate rocks in metamorphic marble in the geological environment of this deposit in our country are many, Jewelry wholesaler and thus the origin of similar Xiuyu very broad. Xiuyu appearance cyan, yellow green. Translucent, were waxy luster polished, hardness of 3.5 degrees to 5 degrees. Neolithic Hongshan culture jade material, produced in the territory Xiuyan fine jade groove, commonly called old jade, the tremolite nephrite. Shang tomb of Fu Hao most of jade and jade tile ditch mineral Xiuyu Xiuyan approximate. Watt coal mine uranium mining has a long history of jade, is abundant. Jade for our current major mining, production accounting for around 60%.
And Tian Yu
Distributed in Xinjiang Shache - Taxkorgan, Hotan - Khotan, Qiemo County stretches 1,500 km north slope of the Kunlun Mountains, a total of nine origin. Hotan jade minerals to tremolite - actinolite and containing trace diopside, serpenti ne, graphite, magnetite and other minerals. The formation of white, blue green, black, yellow, various colors. Most of the color of jade, a few have variegated. Jade is translucent, polished was fat-like luster, hardness of 5.5 degrees to 6.5 degrees. Hotan jade cooked at an altitude of 3,500 meters to 5,000 meters high rock in the. The stripping solution for the long-term weathering fragments of varying 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 rocks, said Hill material. Been found to use and Khotan jade jade produced in the earliest times, from the tomb of Fu Hao Yin Ruins. After the Spring and Autumn, china gemstone wholesale and Tian Yu gradually become a major jade, are collecting seed material, to the exploitation of mountain material before the Qing Dynasty. Zhuo Qing dynasty Qianlong period flood control, the system Monte Jade, jade material weight 10 007 hundred pounds, that is taken from close Retaillau mountains.