Diamond Color: A Guide to Understanding Diamond Color Grades

Diamonds are one of the most highly prized gemstones in the world, and their beauty is determined by a variety of factors. One of the most important of these factors is color. A diamond's color is graded on a scale from D (colorless) to Z (light yellow or brown). In this article, we'll explore the different diamond color grades and what they mean for the beauty and value of a diamond.

Diamond Color Grades

The diamond color scale was created by the Gemological Institute of America (GIA) in the 1950s. The scale ranges from D to Z, with D being the most rare and valuable. The grades are determined by comparing a diamond to a set of master stones, which are diamonds with known color grades.

D: Colorless - These diamonds are extremely rare and have no discernible color. They are the most valuable and highly prized of all diamonds.

E-F: Colorless - These diamonds are also colorless, but they may have slight hints of color that are only visible to a trained gemologist. They are still very valuable and desirable.

G-H: Near Colorless - These diamonds have a slight yellow or brown tint that is visible to the naked eye, but they are still considered to be high-quality diamonds.

I-J: Near Colorless - These diamonds have a slightly more noticeable yellow or brown tint, but they are still considered to be of good quality and value.

K-M: Faint Yellow - These diamonds have a noticeable yellow or brown tint that is visible to the naked eye. They are considered to be lower quality diamonds.

N-Z: Very Light Yellow - These diamonds have a more pronounced yellow or brown tint and are considered to be of the lowest quality.

How Diamond Color Affects Value

The value of a diamond is largely determined by its rarity, and color is one of the key factors that contributes to a diamond's rarity. As a result, diamonds with higher color grades (D-F) are more valuable than those with lower color grades (G-Z).

In addition to rarity, color also affects the overall appearance of a diamond. A colorless diamond will reflect more light and sparkle more brightly than a diamond with a noticeable yellow or brown tint. As a result, colorless diamonds are generally considered to be more beautiful and desirable.


Diamond color is an important factor to consider when purchasing a diamond. While a diamond's color grade can affect its value, it can also impact the stone's beauty and overall appearance. When shopping for a diamond, it's important to work with a reputable jeweler who can guide you through the process of selecting a high-quality diamond that meets your needs and budget.