Is hetian jade really jade?

There is no direct relationship between the pit on Hetian jade and whether it is real jade.

Hetian jade is a kind of nephrite, commonly known as real jade. The traditional concept refers to jade produced in Hotan area of Xinjiang. Hetian jade is a high-end nephrite with a leading brand in China. The new national standard generally refers to the name of jade with hardness between 6.0 and 6.5. . Jade in a narrow sense generally refers to Hetian jade in Xinjiang. . Hetian jade itself is not a regional concept, not specifically the jade produced in Hetian area of Xinjiang, but the name of a class of products. In China, stones with tremolite accounting for more than 98% are called Hetian jade, also known as nephrite, tremolite, tremolite plus nephrite, tremolite plus Hetian jade. Jade in a narrow sense generally refers to Hetian jade in Xinjiang. The chemical composition is hydrated calcium magnesium silicate, and the chemical formula is Ca: MGS (OH) Z (Si 4011) 2. The hardness is 6-6.5 and the density is 2.95-3. 17. Hetian jade, Hubei turquoise, Henan Nanyang jade and Liaoning xiuyan jade are also called the four famous jade in China.

At present, the national standard for testing Hetian jade in China is tremolite jade, which is uniformly classified as Hetian jade, regardless of origin. Hetian mountain material, seed material and landscape material produced in Xinjiang, as well as Russian jade, Han Guoyu (Korean material) and Qinghai jade (Kunlun jade) all belong to the category of real jade. There are small pits on the jade, which can only explain the defects caused by inadequate treatment in the process of making jade, and there is no objective standard to distinguish whether it is real jade.

To identify Hetian jade, as long as it is distinguished by density and texture, the density of Hetian jade is 2.95-3. 17, which is not found in afghanistan jade, Beijing white jade, white marble and other similar products. Hetian jade has a Mohs hardness of 6 ~ 6.5, which can scratch the glass. The tremolite structure with light transmission and flocculent clouds inside is obviously different from the crystalline structure (such as afghanistan jade and Jingbaiyu).

Schematic diagram of Xinjiang seed material Hetian jade (real jade):