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.

Cody K.
Long over due review for David. He did a tremendous job for my wife’s wedding ring appraisal. Amazing service and great experience. Highly recommended. Thank you again David!
e D.
Five stars is not enough for David Stern. He is an amazing artist who designs and creates the most unique and fabulous jewelry. If you have a stone(s), he will create a work of art for you,... suggesting and enhancing your idea, He also has access to the highest quality stones from all over the world . He has been in the jewelry business for years and really knows the ins and outs. If you have jewelry to sell, he will give you a fair price after explaining how he calculated it considering the style, the weight and the quality of the stone(s) He is extremely personable and very pleasant to work with. I am very confident in saying he would never take advantage of you..read more
Gary B.
I looked up reviews for several places to buy jewelry that belonged to my mother who passed away and found great reviews for David Stern Jewelers of Boca Raton.I decided to meet with David.He took... several hours of his time going through each piece and was able to tell me about all of them so that even I could understand.At the end of the day,I left his store with a great deal of money and was very happy with what David did.He is extremely knowledgeable and a true professional in his field.I would highly recommend him.read more