White Diamond Color Scale

Using this scale the diamond on the lower end of the scale d will have the least amount of colour it is considered a colourless stone.

White diamond color scale.

Diamonds that are completely colorless are rare. As a matter of fact the alphabetical color grades are as follows. As a result of the above while white diamonds have 17 diamond colors colored diamonds literally have hundreds of color combinations. Red stones are the most rare of the fancy colored diamonds.

Typically colorless diamonds def grades are the most desirable while diamonds on the lower end of the grading scale d z are less appealing as they lack the crisp white light return that we associate with diamonds. In other words the grading scale applies to diamonds that range in hue and saturation from colorless to noticeably yellow. The diamond color scale used for white diamonds goes from d to z. The gia white diamonds colour grade scale is the industry standard.

White blue white aaaa for example. All d z diamonds are considered white even though they contain varying degrees of color. While white diamonds receive a grade of d to z based on the yellow or brown tint present fancy color diamonds are graded on the intensity of its color. Gia developed the definitive diamond color scale or chart in the early 1950s a time when there were a lot of different and subjective terms in the marketplace for describing a diamond s color.

The colour evaluation on gem quality diamonds is based on the absence of colour. Naturally occurring diamond colors include gray white blue yellow orange red green olive pink purple brown and black. The gemmological institute of america gia colour scale is the industry standard for diamond grading. Official gia color scale.

The gia grades diamonds on a scale of d colorless through z light color. True fancy colored diamonds such as yellows pinks and blues are graded on a separate color scale. Instead of a letter the grade for fancy color diamonds go from faint to fancy deep. The gemological institute of america gia uses a 12 letter alphabetical scale of d to z.

In the first place the gia diamond color grading scale only applies to white diamonds. As the letter is closer to z it means that the diamond is less colorless and starts to be a bit yellowish in tone a pale yellow shade. The gia diamond colour grades range from d colourless to z light yellow or brown.