First of all, we should clearly distinguish nephrite, including Hetian jade, Qinghai jade and Russian jade. Although our jewelry industry does not distinguish these according to the national standard, there are still great differences in reality ~ the answer upstairs is wrong. The hardness of Qinghai material is about 6.5 as that of Hotan ~ Qinghai material is not white yellow, but North Korea material is white yellow. We all know that the price of Qinghai materials can't compare with Kaminowada, but according to the current market, the price of Qinghai materials can't compare with Qinghai. What is the difference between the fields? Qinghai material is characterized by good luster and good water head. They are not as transparent as Hotan. The characteristic of Russian material is dryness, and you can play with the oil in Hotan very well. This is also the reason why Hotan has always ranked first in the minds of players. Now a kilogram of good Qinghai white material costs 2000-4000 ~