While the diamond jeweler talks about the diamond color, he is referring to absence and presence of the color in diamond. Color of a diamond is a result of diamond's composition and it does not change with time. Colorless diamonds allow light to travel through them as compared to the colored diamonds. These diamonds also emit better fire and spark. The process, through which a diamond is formed, is the deciding factor for its color. The whiter the diamond is the higher value it has.

For grading the whiteness of diamonds, jewelers refer to Gemological Institute of America’s (GIA) color scale that starts the rating with D for the colorless diamonds and comes down to Z as the traces of light yellow or brown color are found in the diamonds. If you are wondering which color grade to go for, then diamonds that are graded from D to F are amongst the most desirable and valuable stones. These diamonds are a delight for the diamond lovers. Nevertheless, if you have a low budget, you can also find good diamonds with lower grades. These diamonds are not exactly colorless but show no color to untrained eye.

Consider the setting of the diamond before choosing the grade of diamond. If the setting for your diamond is platinum or white gold, go for high color grades. If you want to get it fitted in yellow gold, slightly low grade diamonds can also look great. While you will find faint yellow hint in the diamonds that are graded from J to M, the color can be camouflaged by choosing the right setting for the stone. Many people prefer the warm glow given by low color diamonds.

Fluorescence is found in the diamonds while they are exposed to ultraviolet light with long wave. Under most of the lighting conditions, this effect cannot be seen by eyes. Some people prefer diamonds without this effect while others look for it. It is all about the aesthetics.