Diamond Color

However, the most valuable white diamonds are completely clear (“colorless”); others amy contain a slight yellow tint.

• White diamonds are graded on an alphabetical scale from “D” to “Z”.
• A diamond with a grade od “D” is completely colorless (and very rare).
• As diamonds move closer to the “Z” grade, they begin to display more of a yellow tint.

While the difference between these grade levels may be fairly difficult to see (unless you are a gemologist), the difference in price can be significant. For that reason, a diamond in one of the middle ranges usually offers the best value.