What kind of jade is Dan Yu?

20 1 1 A jade just discovered in Jinyun County, Zhejiang Province belongs to siliceous jade. Tested by Zhejiang Institute of Geology and Mineral Resources and Zhejiang Jewelry Appraisal Center, Yudan in Xiandu is a kind of jade with chalcedony as the main component, belonging to cryptocrystalline texture, with a grain size of only 0.00 1mm-0.02mm and a Mohs hardness of 6.5. The content of main component silicon dioxide is about 92-96%; According to the national standard "Name of Jewelry and Jade" (GB\T 16552-20 10), the gem characteristics of Yudan, a fairy capital, are basically the same as those of Huang Longyu, a natural jade.

Dan Yu variety of Xiandu

At present, Xiandu Yudan has landscape materials, mountain materials and turf materials. Colors are red, yellow, white, blue, purple, black, orange and so on. And there are many colors associated with it. Jade with rich colors, transparent and beautiful. Because this kind of jade is pure, clean, delicate and transparent. Bright colors, rich, stable and charming, almost no cotton. There are many kinds, good toughness and easy to ponder. Whether it is original stone or sculpture, it is beautiful and attractive, and it is comparable to traditional jade species in many aspects.

Naming the decorations of Yudan in Xiandu.

In order to commemorate Xuanyuan Huangdi's alchemy in Xiandu, Jinyun people called the five-color stone taken by Huangdi's alchemy that year "Xiandu Yudan", and because most of it was produced in Shuhong Town of Jinyun, it was also called "Shuhongyu".

Legend of Dan Yu in Xiandu

There is a beautiful legend about Yudan, the fairy capital of Jinyun: It is said that Huangdi Xuanyuan made a "southern tour" to appease the southern tribes after pacifying the world and unifying the mountains and rivers. On this day, he came to the shore of Haoxi and found the Xiandu area very beautiful. He decided to cast an alchemy here, collect the essence of the sun and the moon, collect the essence of mountains and rivers, absorb the essence of male (Xiandu stalagmite), and put the male root stone, female yin spring, golden stone, Lingshan milk and five-color stone into the tripod to start alchemy. On the day of the celebration on September 9th, I saw the magnificent canyon, the surrounding clouds, the banks of the good stream and the flying national flag of China. Xuanyuan Huangdi opened the tripod and took Dan, which he shared with his subjects. Suddenly, a dazzling golden dragon fell from the sky, and the Yellow Emperor also went to Lapras's paradise. Who knows that with a wave of his hand, the dragon and the dragon's tail overturned Dante, and the remaining Dan liquid spilled into the mountains around Xiandu and Shuhong. Now, it has formed a five-color stone, and people call it-Xiandu Yudan!