| D, E, F | Colorless | Diamonds in this color range are very rare. D is the highest grade attainable. Only direct comparison to a D will yield the difference of an E or an F. |
| G, H, I, J | Near Colorless | Diamonds in this range are the most commonly used diamonds. They offer excellent value for the quality. A slight color may be detectable in I and J. |
| K, L, M | Faint | Diamonds in this range will have a noticeable faint color. These are not carried by AuthenticWatches.com |
| N - Z | Very Light - Light | Diamonds in this range will have a noticeable or distracting color. These are not carried by AuthenticWatches.com |
These images show the different diamond shapes and their names.