成色 Color

鑽石的色澤會因為天然雜質而有所偏差。完全純正的鑽石應該是透明無色的。一般的方法是把鑽石按偏黃的程度分為不同的等級，把樣品與已知色級的比色石對比確定，以D級最高，Z最低。

• 無色：D, E, F
• 接近無色：G, H, I, J
• 微黃：K, L, M
• 輕淺黃：N, O, P, Q, R
• 淺黃：S, T, U, V, W, X, Y, Z

The color of the diamond is based on natural impurities. A completely pure diamond should be transparent and colorless. The general method is to divide the diamond into different grades according to the degree of yellow, and compare the sample with the colorite of the known color grade, with the highest D grade and the lowest Z grade.

• Colorless: D, E, F
• Near Colorless: G, H, I, J
• Faint Yellow: K, L, M
• Very Light Yellow: N, O, P, Q, R
• Light Yellow: S, T, U, V, W, X, Y, Z