The four major jades in China are Hetian Jade, xiuyan jade, dushan jade and lantian jade.

1. Hetian jade

Hetian jade is produced in the area around Kunlun Mountain, among which Hetian white jade is called the national jade by Chinese people and is regarded as the first of the four famous jade in ancient times. Hetian jade is a high-grade jade in jade, and it is also one of the candidate jade in China's national stone. At present, the name of Hetian jade does not have the meaning of origin in the national standard, that is, whether it is produced in Xinjiang, Tuojiang, Sichuan, Qinghai, Liaoning, Guizhou, Russia, Canada and South Korea, it can be called Hetian jade if its main component is tremolite above 95%, and Hetian jade can be marked on the jewelry appraisal certificate.

2. xiuyan jade

The jade in Liaodong is called xiuyan jade. Xiuyan jade is produced in Xiuyan County, Liaoning Province, and is divided into two categories: old jade and jasper. Old jade is simple and dignified, and its color is yellowish and white. Jasper is solid, moist, delicate and round, mostly green to lake green, and the darker it is, the more transparent it is. Xiuyan jade carving crafts are vivid in shape, meticulous and round in carving, and can use various techniques to turn defects into yoga, like an illusory gentleman.

3. dushan jade

dushan jade, also known as "Nanyang Jade" or "Henan Jade", is a unique jade variety in China. The jade is tough, dense, delicate and soft, with many-hued color, and its accuracy can almost rival that of jadeite. There are six kinds of pigments, green, blue, yellow, purple, red and white, which are rich and colorful. Fat white as white clouds, green as jade, like a gentleman who is clean and cool.

4. lantian jade

lantian jade is one of the earliest jade species developed and utilized in China, with a history of more than 4, years. This kind of jade is produced in Lantian County, Shaanxi Province, and Lantian County is named because it is rich in lantian jade. In ancient times, it was said that "the beauty of jade is called blue". The blue here is not the blue we know now, but a kind of green to the extreme (the ancients thought that the extreme of green is blue and the extreme of red is purple), so they called the local jade lantian jade.

Grade of jade:

1. White jade

White jade has different colors, textures, luster, etc. due to its different contents, abnormal structure, and unequal cracks and impurities. Theoretically speaking, white jade is not as white as possible, white jade must be moist, and white without moistening is not a good white jade.

2. Jasper

Jasper is green, and the green spinach is the top grade, while the green one with gray is the bottom crystal. Soft and uniform quality, dense and delicate texture, moist and smooth, translucent oily-waxy luster.

3. Blue white jade

Blue white jade is a transitional variety of white jade and sapphire, and it is a large variety of Hetian jade. The color of blue white jade is based on white, with blue, flashing yellow and flashing green in white, soft and uniform texture, and oily-waxy luster.

4. Sapphire

There are many kinds of colors ranging from light blue to dark blue, which are generally based on bamboo leaf green. Sapphire is blue in color, tough in texture, moist and smooth, soft and uniform, oily or waxy in luster.

5. Topaz

Topaz is from light yellow to dark yellow, and the color of "yellow as steamed pear" is the best. Topaz is dark yellow in color, soft and uniform, dense and delicate in texture, tough, moist and smooth, and translucent in oily-waxy luster.

above content reference: Baidu Encyclopedia-Four Famous Jade.