It is true – deciding on the perfect diamond to purchase can be a daunting task. Diamonds, behind the dazzle and sparkle, have unique properties that make them pop. It would follow that understanding a diamond’s properties is key to making the final decision to purchase.

That in mind, years of research into diamonds yielded the 4Cs, developed by the Gemological institute of America (GIA), , to aid us understand these properties and inform our purchasing decisions: Color, Clarity, Cut and Carat. While simple, plenty of available literature on the internet today fails to comprehensively cover the 4Cs with research finding bits of information scattered across different pages. A key aspect not often discussed under Color grading is the Colorless Diamond Scale juxtaposed against its influence on price.

This is our attempt to change that.

Let us understand Colorless diamonds and the colorless diamond scale.



Colorless diamonds fall under the category of white Diamonds, meaning diamonds with no distinctive color. According to the GIA, colorless diamonds are the top tier grades of diamonds, with no noticeable hints of brown or yellow colors in their structures. They comprise the grades D-F on GIA’s color scale, our subject for this article.



There are different types of diamonds based on color. Distinctively colored diamonds such as the black, pink or yellow diamond and the white diamonds.

In order to distinguish white diamonds based on quality, the GIA developed the color scale, ranging from D-Z to classify different diamonds based on their color. The color scale allows gemologists to determine value by comparing diamonds against the base set of diamonds per color range.

Here comes the question: Why does the color scale start at D? The response is to allow a fresh beginning to diamond color grading. Before the GIA developed its scale, there were pre existing diamond scale systems such as ABC, or roman numbered systems. Only these systems were faulty, making it imperative that the GIA use a different system to classify diamonds. A new better and nuanced system.

In this case, letter D represents colorless diamonds and Z diamonds with hints of color noticeable to the untrained eye. The institute would then determine different color ranges to put together diamonds with almost similar properties, such as labelling range D-F as colorless, G-J as near colorless, K-M as having faint color, N-R as Having very light color and S-Z as having light color.


As mentioned, colorless diamonds form scale D-F on the diamond color scale. Diamonds graded as D are most colorless, with no apparent color traces even after inspection by a well qualified gemologist at 10 times magnification. Grades E and F have similar qualities, where there are no color traces even after inspection.


Noteworthy, colorless diamonds can only be graded by trained gemologists doing side by side comparisons of the diamonds as the untrained eye may fail to notice that hints of color observed are reflections from an external source or induced by an adjacent object’s color.

Following the sensitivity of the colorless diamond’s color, it is important to adorn them on objects made of Silver or platinum to keep its glare. Otherwise, golden objects would project their yellow, making a colorless grade D-F diamond appear to be K-M.

The colorless diamond scale is a standard of the highest quality of white diamonds due to their purity and uniqueness. It also comprises very rare diamonds as the diamond formation process makes most available on the market today have hints of hue in their structure.

As the most pure diamonds, colorless diamonds have tremendous demand with very little supply. Juxtaposing these realities provides insight on their expected price range.


Colorless diamonds are the most expensive diamonds in the market. As the demands for colorless diamonds cannot be met, price mechanisms are integral to managing distribution. Understand that while a diamond’s price takes into consideration the other Cs [cut, carat and clarity], colorless diamonds are still generally more costly.

The minimum price for a unit of a loose 1 carat D graded colorless diamond with good cut quality starts at approximately 3,000 United States Dollars. Of Course the price fluctuates as other features, such as its cut and carats, are adjusted to suit the buyers needs.

So when making the final decision to purchase a colorless diamond, it is key to understand their rarity and allure, and be prepared for their price range.

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  1. ZUBER

    I’ve seen your engagement rings collection. No doubt all those rings are beautiful but majority of the rings are available in black color diamond on your website. don’t you sell big colorless diamond rings?

  2. ZUBER

    I’ve never seen such an informative post on colorless diamond. You have detaily explained colorless diamonds scale in this post. From color grade to pricing all the topics you have covered are helpful for me!
    Thank you.

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