It refers to white nephrite. Traditional jewelry circles have different names for different degrees of white nephrite, such as suet white, pear white, snowflake white, ivory white, fishbone white, brown rice white, chicken bone white and so on. Among them, sheep fat white (like coagulated fat) is the best, which is unique to Hetian jade. The amount of suet white jade is very small and its value is very high. 2. Blue and white jade

Refers to nephrite between white jade and sapphire, white but not white, green but not blue. 3. Sapphire

The traditional "sapphire" in China is dark green with gray or green with black. Sapphire is the most common, ranging from light cyan to dark cyan, with flashing green. Jade is the hardest of nephrite, but its color is not as good as white jade, and its value is lower than white jade. 4.jasper

Nephrite is green to dark green, sometimes with black spots. Its greens are Ying Ge Green, Song Hualv Green and Ginkgo Green. As far as the position of Hetian jade in China ancient jade is concerned, the transparent and smooth spinach is the top grade, and the green with gray is the inferior grade, but it is by no means "Jasper" or "Jasper" in seasonal jade. 5. Mo Yu

Nephrite, from black to light black, is sometimes "blue-black", often accompanied by sapphire, and its luster is darker than other jadeites. 6. Tang Yu

It refers to nephrite with blood red, brown sugar red, purple red and brown red, among which blood red sugar jade is the best, subordinate to white jade and sapphire.