When looking at a diamond, your eyes will notice something that makes a diamond look slightly dull or unclear. You may not be able to pinpoint the cause, but your eyes see a distraction. That distraction can often be the diamond's color. Diamond color is actually the absence of a colored tint in the diamond. The tint is most often yellow (and sometimes brown or green). Color is graded on a scale established by GIA that ranges from D-Z. grades beyond Z count as fancy colored, which actually boast a premium. In general, the higher the color, the rarer and therefore more expensive the diamond. Colors are actually ranges so a diamond that has more color than a G but less than an H, for example, would be a G color because it is better than H and falls in the G-H range.
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So given that the scale goes from D to Z, D is the highest or rarest and most expensive diamond color. A D color diamond has no visible tint of color whatsoever. This is the most prized or valuable diamond color in the world. It is considered colorless, in industry trade terms. There are no eye distractions that impede the diamond's light performance and sparkle. The no visible tint of color make the diamond look absolutely stunning and desirable.
The D color diamonds are for perfectionists. While not required for a beautiful stone, people who must have the highest color will prefer D colored diamonds. It's always important to remember that a D color diamond's price may affect the other attributes such as cut, carat and clarity. If you're okay with reducing to E or F (which are also colorless), you can maximize the other attributes further to strike a balance. If that isn't an issue for you, then certainly a D color diamond is unquestioned.
The E color diamond also falls in the colorless range of diamonds. It is very rare, and also has a significant premium. The color is not visible to the naked eye and the difference between E and D is almost undetectable, especially when set in jewellery or engagement rings. E color diamonds represent less than 1% of all the world's diamonds and are premium gem quality.
The F color diamond is the last quality in the colorless range. It has an unnoticeable color tint that affects the diamond's sparkle. It is an excellent balance of the highest quality range and value. F color diamonds are for those that truly value the important of a colorless diamond, while still being able to increase the other attributes such as cut, carat and clarity. We highly recommend F color diamonds because when set in jewellery and bridal rings, they look stunning.
The difference between the D, E and F colors is really quite small. On an electronic colorimeter (A diamond colorimeter is an instrument for diamond color grading), the score for D-F would be between 0.00 and 1.49. As a customer, you should feel great about any color in this range because your diamond will not have colored distraction the block light penetration and reflection.