The jade of Kunlun Mountain is located at the foot of Kunlun Mountain. Kunlun Mountain is the most mysterious place among all the famous mountains and rivers, and it is the sacred mountain in China ancient mythology. Taoism regards it as a fairy mountain where immortals live. In the extraordinary imagination of the ancients, it was a huge uplift on the earth. In ancient books, Kunlun was either called a market or a hill. It is the "ancestor of Wanshan" and "ancestor of Long Mai", so naturally there will be gods living in this magical place. The earliest legend is that a god with a tiger face and a long tail guarded there, and later became a beautiful woman-the Queen Mother of the West. According to legend, she is the fairy Lord of Kunlun Mountain. The "Yaochi" recorded in many ancient books is the Black Sea at the head of the Kunlun River, with an altitude of 4,300 meters, which is the birthplace of the Kunlun Sect of Taoism.

Kunlun jade, the main variety of nephrite in Qinghai, had some nonstandard names such as Kunlun white jade, Kunlun jade, Golmud jade and Qinghai jade (emerald variety) at the initial stage of production. According to the naming principles and terminology of the national standard "Jewelry and Jade Name", combined with the convention of classification and naming of nephrite, Qinghai nephrite is divided into white jade, blue white jade, sapphire and other varieties according to its color characteristics. Commercial products are basically the same as Hetian jade, but the color characteristics are richer. The varieties and characteristics of emerald green and gray-gray purple in Qinghai nephrite are described as follows:

White jade: the main variety of nephrite in Qinghai, which is also the largest variety, is sometimes customarily called "Qinghai white" in the industry. It is grayish white-waxy white, translucent, and its transparency is obviously better than that of Hetian jade. The texture is fine and moist, and the yield is large, and a small amount reaches the quality of "sheep fat white jade".

Blue white jade: light gray blue gray, light yellow gray, etc. , elegant and refreshing color, translucent, delicate and even texture.

Sapphire: celadon-dark gray-green, dull and translucent, superior in texture to Hotan sapphire, and good in head and foot, suitable for making large and medium-sized ornaments and utensils.

Smoke sapphire: light to medium gray purple to smoke gray, with a slight gray tone in smoke gray. Translucent, delicate and moist, some people call it violet, lotus root jade, sapphire and so on. It is rare in traditional hetian jade varieties.

Emerald: light emerald green, with green characteristics similar to tender green jade, which is obviously different from the green of sapphire and jasper. This kind of green nephrite is rarely produced alone, but adheres to one side of white jade and aquamarine raw materials or forms a sandwich. The distribution of lumps is often related to sandy and mottled stones.

Tang Yu: There are also varieties of sugar-colored jade in Qinghai nephrite, mainly light yellow-brown uniform sugar-colored disseminated and spotted dark brown-yellow-brown sugar-colored. Its sugar color is either concentrated to form dark brown spots, or its color is too light, which makes little contribution to pretty color, destroys a lot of jade and has low utilization value.