Color refers to the natural tint inherent in white diamonds. In nature, most white diamonds have a slight tint of yellow. The closer to being “colorless” a diamond is, the rarer it is. The industry standard for grading color is to evaluate each stone against a master set and assign a letter grade from “D” (colorless) to “Z” (light yellow).
Diamond Color Chart
Tiffany only accepts engagement diamonds in the “colorless” and “near colorless” range on a diamond color scale. In other words, for engagement rings, Tiffany only accepts D color diamonds, E color diamonds, F color diamonds, G color diamonds, H color diamonds and I color diamonds. Borderline diamond color classifications are automatically given the more conservative grade.
Very Light Yellow
The gemological standards in this section refer only to individually registered engagement diamonds set in certain ring styles.
Does Diamond Color Matter?
Color is the second most important of the 4Cs because the color grade directly affects the stone’s appearance. Diamonds with a poor color grade can appear slightly yellow instead of the desired brilliant white. Additionally, the Tiffany Gemological Laboratory will not accept stones exhibiting strong or excessive fluorescence, which, in natural lighting, can give diamonds a milky appearance.
“If you’re buying a piece of jewelry from Tiffany, you’re buying a piece of artwork.”
—Paul Domiciano, model maker
Cut is determined by how a diamond’s facets interact with light.