How hard is the blue and white mountain material in Xinjiang?

6.5 to 7 millisieverts. The particularity of Xinjiang blue and white mountain materials lies in hardness and density. The hardness of blue and white mountain materials in Xinjiang can often reach Mohs 6.5~7. After hundreds of millions of years of wind, frost, rain and snow, jade is excellent. Blue and white mountain materials are collected from Pishan County, Xinjiang, yutian county and Golmud, Qinghai, collectively referred to as blue and white mountain materials.