Diamond Color

Understanding what diamond color means helps in choosing the right diamond. Interestingly, the diamond color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value. GIA’s D-to-Z diamond color-grading system measures the degree of colorlessness by comparing a stone under controlled lighting and precise viewing conditions to masterstones of established color value.

Many of these diamond color distinctions are so subtle that they are invisible to the untrained eye; however, these distinctions make a very big difference in diamond quality and price. Hence, it is important to get a GIA expert’s opinion in evaluating the best color for your diamond.

Why does the GIA color grading system start at D?

Before GIA universalized the D-to-Z Color Grading Scale, there was no clear standard to define what diamond color is. A variety of other systems were used loosely, from A, B, and C (used without clear definition), to Arabic (0, 1, 2, 3) and Roman (I, II, III) numbers, to descriptive terms like “gem blue” or “blue white,” which are notorious for misinterpretation. So, the creators of the GIA Color Scale wanted to start fresh, without any association with earlier systems. Thus the GIA scale starts at the letter D. Very few people still cling to other grading systems, and no other system has the clarity and universal acceptance of the GIA scale.

Are diamonds graded as Zs considered fancy-color?

No. Naturally colored diamonds outside the normal color range are called fancy-color diamonds. The FTC provides no guidelines for the use of the term “fancy-color” in the US, but there is general agreement in the international trade about what diamond color range is customary for fancy-color diamonds. These are either yellow or brown diamonds that have more color than a Z master stone or they exhibit a color other than yellow or brown.

Joseph G.
THE BEST! This is the third time I’ve purchased / done business with David Stern and first time writing a review and we couldn’t be happier. Thank you guys for all you do. My wife picked out a... beautiful push present and had it custom ordered to her liking. I brought in a family heirloom broken ring to be fitted and fixed and cleaned and David’s top priority was my 100% satisfaction and he delivered. Pricing is super competitive and up-front, no surprises later. The New Years sale was really a blessing to us. 3 for 3 positive experiences. Thanks again!read more
A wonderful experience!David Stern sets the bar high for buying estate jewelry as well as selling his beautiful designs. His willingness to explain all aspects of the process of purchasing jewelry... with complete transparency, his beautiful store, not to mention David’s impeccable sense of style all contribute to a comfortable, safe environment where one knows they will be treated fairly and courteously. We were so impressed that not only did we sell the jewelry we had, we also arranged for a new David Stern designed necklace to be made for us right away.If you’re selling jewelry, don’t waste time seeing anyone else. If you’re buying, pay him a visit. You won’t be disappointed!read more
Consumer A.
So far I have come across only two fair places in Boca to sell your jewelry. One estate buyer and here. The difference is David is a gemologist and has a lot of inventory and I really appreciated... his time and professional manner. His prices were more than double that I was offered anywhere else and right in line with one other place I would definitely go back to him because he is fair and honest. I feel he is more of an expert and has lots of knowledge he was a pleasure to work with and highly ethical. I will make purchases as well as sell again to him and likely won’t go elsewhere from now on. Very fair and beyond double what others offered besides the one place who really were not gem experts.read more