Hetian jade: How much is cold knowledge?

First, the time to get the official naming is not long

Hetian jade has developed and utilized the “Silk Road”, which has a history of more than 7,000 years, and communicates Chinese and Western cultures. Its predecessor was the “Jade Road” that transported Hetian jade. It is more than 4,400 years ahead of the Silk Road. When Qin Shihuang unified China, Hetian jade was called "the jade of Kunshan" because it was produced in Kunlun Mountain. It was not officially named "Hetian jade" until 1883.

Second, the amount of modern mining is extremely large

From the written history of Xia, Shang and Zhou to the 4,000-year history of the late Qing Dynasty, Hetian jade produced a total of 9,968 tons. After the founding of New China, from 1957 to 1995, a total of 1449 tons of Hetian jade was collected, which is close to the sum of ancient mining.

Third, Hetian jade's toughness actually exceeds steel

Hetian jade is extremely tough, and its compressive strength can exceed steel, which is a fact that people can hardly imagine. According to scientific tests, the compressive strength of medium carbon steel (mainly used for making heavy machinery shafts, gears, machine tool spindles, bench tools, etc.) is 1600 kg/cm 2 , and Hetian jade has a compressive strength of up to 6541 kg / Square centimeter.

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