Since Tiffany began to promote yellow diamonds three years ago, the poison of colored diamonds has been deeply implanted into the hearts of every lady who likes diamonds, so in order to let more women have an understanding of GIA colored diamond grading, Moissanite Information Network has specially sorted out the following pictures and texts for students to share!
First, let’s take a look at the explanation of the color item on GIA’s colored diamond report:
The Color items are as follows:
Origin
- Natural color
- Treated Treated
2.1 Artificially Irradiated irradiated color change
2.2 HPHT processed high temperature and high pressure treatment
- Undetermined Unable to determine the source of the color
Grade, stated in two lines
The first line determines the intensity of the color, divided into nine levels:
- Faint (Micro)
- Very light
- Light
- Fancy light
- Fancy (Lottery)
- Fancy dark
- Fancy intense, “Intense Color”
- Fancy deep
- Fancy vivid
The second line describes the color seen in the diamond, e.g. Yellow, see “Basic Colors of 27 Fancy Color Diamonds” later
The overall composition is as follows:
Fancy Light Yellow
Distribution
Even evenly distributed
Uneven distribution is uneven
GIA Fancy Color Diamonds are graded in two lines:
Yellow (or brown): As we all know, the color description of colorless diamonds, from D – Z represents the relative symmetry of no yellow, more than Z color, that is, to the level of fancy color diamonds, K, L, M is Faint (faint color, if yellowish is slightly yellow), N – R is very light (very yellow), S – Z is light (light yellow), none of the above have reached the level of colored diamonds, in the standard expression, can not be marked with Fancy, only yellow more than Z color can be called Fancy, Therefore, fancy color diamond-grade yellow diamonds, from low to highest, are:
- Fancy Light Yellow
- Fancy Yellow
- Fancy Dark Yellow
- Fancy Intense Yellow
- Fancy Deep Yellow
- Fancy Vivid Yellow
colors other than yellow (or brown), as long as they are a little stained, are also called fancy color diamonds, so the grading standards for fancy color diamonds of other colors from low to high (taking pink diamonds as an example), in order:
- Faint (micronized powder)
- Very Light Pink
- Light Pink
- Fancy Light Pink
- Fancy Pink (medium colored pink)
- Fancy Dark Pink
- Fancy Intense Pink
- Fancy Deep Pink
- Fancy Vivid Pink
Concentrate:
Fancy Deep and Fancy Vivid were added in 1994.
- Only if the color exceeds a certain level can it be named FANCY level, but except for yellow (or brown), there is a little color that reaches the Faint level, which is also a fancy color diamond.
- Since fancy color diamond-grade yellow is found in more quantities than other colors, the color that looks more intense may only be Fancy Light, while the color that looks light pink, blue, gray or green looks light, but may still be rated as Fancy Intensive or FancyDeep.
- Red, black and white diamonds are only one level Fancy, because as long as they are not 100% red, slightly lighter is pink, as long as black is a little unsaturated, it is gray, and the same is true for white diamonds.
- It is very common for two colors to appear on a diamond at the same time, depending on the amount of color held, there are primary and secondary colors, which are usually described as (in the case of pink and purple) 😛 urplish pink (pink with purple), with the primary color placed in the back and the secondary color in the front. When different colors reach a certain proportion, it is directly called Pink – Purple (pink-purple) regardless of the main and secondary.
- About brown fancy color diamonds. Strictly speaking, brown is not the primary color of the spectrum, but the darker, less chromatic orange, brown (brown), coffee and chocolate all belong to this color category. Major brown diamond mining companies designed separate grading standards for brown diamonds in 1990 to promote brown diamonds, which will not be detailed here.
- Fancy color diamonds are graded according to the parameters of the Munsell color system by measuring color, color saturation, shade (value) and uniformity of the diamond’s color distribution.
- Colored Series are similar to Cape Series diamonds in that they are graded by color, clarity, cut, carat. Fancy color diamonds have the same standards for clarity, cut and carat as Cape diamonds. Of course, there are differences between them, the main difference is that the highest value of fancy color diamonds is based on color, while D to Z
In the range, no color is used as the criterion. Therefore, fancy color diamonds are usually graded from the front side up. The reason for grading is that the cut can significantly affect the color of the fancy color diamond, and diamonds are generally worn face up, and graders evaluate this direction to consider the effect of cutting on color.
27 basic color words for fancy color diamonds:
RED
GREEN
ORANGY RED
BLUISH GREEN
REDDISH ORANGE
BLUE-GREEN
ORANGE
GREENISH BLUE
YELLOWISH ORANGE
BLUE
YELLOW-ORANGE
VIOLETISH BLUE
ORANGE-YELLOW
BLUISH VIOLET
ORANGY YELLOW
VIOLET
YELLOW
PURPLE
GREENISH YELLOW
REDDISH PURPLE
GREEN-YELLOW
RED- PURPLE
YELLOW-GREEN
PURPLE- RED
YELLOWISH GREEN
PURPLISH RED
GIA divides fancy color diamonds into 27 shades and assembles them into a continuous ring of tones. These 27 shades get their “red” from the plus 12 o’clock, and they come from practice, go back and practice, and basically encompass all the hues of diamonds known to date, forming the core part of the framework of color grading terminology. Want colored diamond?
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