Your cart

Your cart is empty

Why Diamond Grading Starts at D

Why Diamond Grading Starts at D

If you’ve ever looked into buying a diamond, you’ve probably noticed something odd: the color grading system starts at D. Not A, not B, not even C. Just straight to D. So what gives?

A System Built to Avoid Confusion
Back in the day, before the Gemological Institute of America (GIA) standardized diamond grading, there were tons of different systems floating around—some used numbers, some used letters, and none were very consistent. Some jewelers would say an “A” diamond was the best, others had triple A’s, and some even used words like “top white” or “river.” The result? A lot of confusion for customers.

So Why D?
When GIA introduced its color grading system, they wanted to make sure it was crystal clear—no pun intended. They deliberately started at D to avoid overlap or confusion with any previous systems that may have used A, B, or C. That way, when a diamond is graded D, you know it means colorless—no wishy-washy marketing terms involved.

What Comes After D?
The scale runs from D (completely colorless) all the way down to Z (noticeable yellow or brown tint). Most engagement ring diamonds fall somewhere between D and J, depending on budget and preference. The difference between each grade is subtle, but when it comes to pricing, even one letter can mean hundreds or thousands of dollars.

Does It Really Matter?
Honestly, it depends on your priorities. A D color diamond is rare and stunning—but it also comes at a premium. Many people find that a G or H diamond looks just as white once it’s set. So unless you're going for an investment-grade stone or are just obsessed with perfection (no judgment), you have some wiggle room.

Previous post
Next post

Leave a comment