Diamond Color Scale
Tiffany Diamond Experts 800 518 5555
At Tiffany, laboratory experts determine the color of each diamond by
comparing it to authenticated “master” diamonds. Each stone is
then color-graded to a precise scale from “D” (colorless) to “Z” (saturated).
A Tiffany diamond must be rated “I” color or better.
Tiffany gemological standards refer only to
round brilliant diamonds from .18 to 2.99
carats set in certain ring styles. Round brilliant
diamonds smaller or larger, fancy shape
diamonds and fancy color diamonds each have
their own specially tailored standards
of evaluation. Consult your Tiffany Sales
Professional for details.