A complete collection of diamond grade names (classification of diamonds)

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List of contents for this article:

• 1、Diamond grade comparison table
• 2、What are the grades of diamonds?
• 3、diamond Grade

Diamond grade comparison table

1. The comparison table between diamond grade color and clarity is as follows: Color grade: D, E, F: Represents the highest grade among colorless diamonds, with almost no color tone. G, H: Nearly colorless, but slightly less color tones than D, E, and F grades. : As the letters move backward, the color of the diamond gradually deepens and its value gradually decreases. Clarity Level: FL: Immaculate, there are no flaws on the inside and outside of the diamond.

2. EX: means that the diamond's table ratio, polishing and symmetry have reached the highest level of "Excellent". Very Good: Excellent cutting, second only to 3EX, and still has good fire color and brightness. Good: The cutting is average, but it can still meet the wearing needs. Fair/Poor: Poor cutting, which affects the fire color and overall appearance of the diamond. Carat weight: The weight of a diamond is calculated in carats (ct), and 1 carat is equal to 200 milligrams or 0.2 grams.

3. Clarity, cut 4C standards and fluorescence rating, the internationally accepted GIA (American Gemological Institute) rating standard.

4. The comparison table of diamond grade and clarity can be summarized as follows: Diamond color grade Diamond color grade from high to low is: Grade D: Completely colorless, the highest color grade, extremely rare. Grade E: colorless, only gemstone identification experts can detect trace colors, very rare. Grade F: colorless, a small amount of color can only be detected by jewelry experts, and it is still a high-quality diamond.

5. The diamond grade comparison table is mainly divided according to five angles: carats, fluorescence, color, cut and clarity of the diamond: color grade: colorless diamond: grade D, grade E, and grade F, which are the highest grade, and the color is pure and transparent. Almost colorless diamonds: G-grade, H-grade, I, J-grade, slightly yellowish in color, but still relatively pure. Light yellow diamonds: K-grade, L-grade, M-grade, the color gradually turns yellow.

What are the grades of diamonds?

Diamond grades are mainly divided according to four dimensions: weight, cutting, clarity and color, namely the internationally accepted "4C standards". The specific grades are divided as follows: Weight (Carat) grading: The weight of diamonds is in carats (ct), 1 Carat =0.2 grams. When the color, clarity, and cutting are the same, the higher the weight, the higher the grade, and the value increases exponentially (for example, the price of a 2-carat diamond is much higher than the sum of two 1-carat diamonds).

Clarity Level: FL: Immaculate, there are no flaws on the inside and outside of the diamond. IF: The interior is flawless, but there may be slight flaws on the surface. VVSVVS2: Very slight flaw level, the flaw is very small and difficult to detect. VSVS2: Minor flaw level. The flaw is slightly more obvious than VVS level, but it is still difficult to detect. SISI2: Small flaw level, the flaw is more obvious, but it does not affect the overall appearance of the diamond.

The grade of diamonds is mainly divided according to four dimensions: weight, cutting, clarity and color, which is the internationally accepted "4C standard". The specific grading is as follows: Weight (Carat) grading: The weight of diamonds is in carats (ct), and 1 carat =0.2 grams.

The grades of diamonds are: The weight and weight of diamonds in the 4C standard are measured in carats, 1 carat =0.2 carat =100 points. The larger the carat number of diamonds, the value type will continue to increase. As for the market, it will be determined based on your own situation and preferences. There are many types of diamond cutting according to the 4C standard, including ideal types, good cutting, good cutting, general cutting and poor cutting. These five cuts are arranged in order from good to bad.

The "N" in the diamond's grade represents one of the color grades of the diamond, which belongs to the darker grade. The following is a detailed explanation of diamond grades: Color grades: The color grades of diamonds are divided into 23 grades such as DEFGHIJ from high to low. Among them, grade D is the highest level, which means that diamonds are completely transparent and extremely rare; while grade N is a darker level, where more obvious colors can be detected, and the fire color is relatively poor.

diamond Grade

What is the diamond grade? The grade of diamonds is generally divided by 4Cs. The so-called 4C is the color, clarity, grams and cutting quality of the diamond. These four aspects determine the quality of diamonds.

The color grade of diamonds is divided into 23 grades such as DEFGHIJ from high to low. Among them, grade D is the highest level, which means that diamonds are completely transparent and extremely rare; while grade N is a darker level, where more obvious colors can be detected, and the fire color is relatively poor. Clarity level: Clarity level is divided based on the number, size and location of internal flaws in the diamond.

Natural diamond grade (gemstone grade) color: From D to Z, grade D is completely colorless (the highest grade), and grade Z has a light yellow/brown tone; colored diamonds (colored diamonds) are graded according to color tone (such as powder, blue, yellow diamonds), saturation, and depth. The value of thick color, brilliant color and other levels is much higher than that of ordinary color diamonds.

Diamond clarity is divided into 6 categories and 11 levels in total. From high to low, they are flawless level (FL), internal flawless level (IF), extremely slight inclusion level (VVSVVS2), slight inclusion level (VVSVVS2), slight flaw level (SISI2) and inclusion level (III3).