The color grades of diamonds are divided into D, E, F, G, H, I-J, K-L, M, N-O, P-R and S-Z. Grades G, H and I-J are almost colorless. G and H diamonds are very different in color in the near colorless range, so are H and I, so the grades are separated.

D, e and f belong to the colorless range; G, H, I and J belong to the near colorless range; K, l and m are yellowish; Below n is light yellow.

Diamonds are known as the "king of gems" in the world because of their highest hardness, crystal clear texture and dazzling features. It symbolizes success, elegance, loyalty, eternity and innocence, so it is deeply loved by people. At present, diamonds are the most traded gems in the world jewelry trade.

Extended data

Grade d: completely colorless. The highest color level is extremely rare. Class e: colorless. Only gem experts can detect trace colors. This is a very rare diamond. Class f: colorless. A small amount of color can only be detected by jewelry experts, but it is still considered colorless. It belongs to high quality diamonds.

G-H grade: almost colorless. Compared with higher grade diamonds, it has a slight color. But diamonds of this color still have high value. I-J grade: almost colorless. A slight color can be detected. The value is higher.

K-M grade: dark color, poor fire color, wedding diamond ring net is not provided, and customers are advised not to use it. N-Z grade: dark color, poor fire color, no wedding diamond ring net, customers are advised not to use it.

Baidu encyclopedia-diamond color scale