Diamond Grade DEF (Diamond Grade de)

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List of contents for this article:

• 1、A grade table for diamond purity?
• 2、What are the prices of different diamond color levels?
• 3、Diamond fineness grade and purity chart
• 4、How to distinguish the level of diamonds (how to distinguish the level of diamonds)

A grade table for diamond purity?

1. Diamond purity mainly involves color, clarity, cutting, fluorescence, milk and coffee, etc. The following is the grade table and description established according to the GIA standards of the American Gemological Institute: Color grade DEF: colorless, transparent and colorless, extremely rare. GHIJ: Nearly colorless, nearly colorless when observed with the naked eye, and has high value. KLM: Slightly yellow, with a slight yellow tone visible to the naked eye. NOPQR: Slightly light yellow, and the yellow tone is more obvious. STUVWXYZ: Light yellow, with prominent yellow tones.

2. The purity level table of diamonds is as follows: Diamond clarity level: FL: flawless level, the diamond is free from flaws inside and outside. IF: Internally flawless level, the diamond is flawless internally, but there may be slight flaws on the surface. VVS1 and VVS2: Very slight inclusion level, with extremely small flaws inside the diamond that are difficult to detect. VS1 and VS2: Slight inclusion level, with small flaws inside the diamond, but not easily observed.

3. The grade table of diamond purity is as follows: Diamond clarity grade: FL: Immaculate grade, no inclusions or surface features can be found in the diamond under a 10x magnifying glass. IF: Internally flawless level, the diamond is internally flawless, but may have minute surface features. VVS: Very slight inclusion level, divided into VVS1 and VS2. There are extremely small inclusions inside the diamond and are difficult to observe.

4. The diamond purity level table is as follows: Diamond purity levels are mainly divided into the following categories: LC (flawless level) Description: There are no flaws inside and outside the diamond, which is the highest level of diamond purity. When observed under a 10x magnifying glass, no inclusions or surface features could be seen. Characteristics: Extremely rare and expensive, usually used for high-end jewelry customization and collection.

What are the prices of different diamond color levels?

There are significant differences in the prices of diamonds between different color levels. Colorless diamonds: DEF color: These are the highest grade of colorless diamonds, with pure and flawless colors and the highest price. GH color: Nearly colorless, slightly lower than DEF color, but it is still a high-quality choice. IJ color: Slightly yellow, the price drops further. KZ color: The yellow color gradually deepens, and the price is relatively low. Colored diamonds: Pink diamonds: Very rare and extremely expensive. They are the aristocrats among diamonds.

The price of 1-carat diamonds of different grades varies significantly, mainly affected by quality factors such as color, clarity, and cutting work. The price range can range from 40,000 - 50,000 yuan to 100,000 - 150,000 yuan or even higher. The price range corresponding to specific grade combinations is as follows: The price of such 1-carat loose diamonds in medium and low grade combinations (H color, clarity SI cutting 3EX, no fluorescence, no milk coffee) is about 40,000 - 50,000 yuan.

Different colors of diamonds have large differences in prices, generally around 20%-30%. Specifically: Relationship between color grade and price of colorless diamonds The color grade of colorless diamonds ranges from D to Z, of which D is completely colorless and has the best quality. Under the same weight, same cutting, and same clarity, the prices of diamonds with different color grades will differ significantly.

The price of carat cultivated diamonds is affected by quality factors such as color, clarity, and cutting work. At the same time, brands and sales channels will also vary the price. The approximate price range is as follows: Low quality: The color grade is J-Z, and the clarity is I1 - I3, the cutting work is average, and the price is around 1300 - 2500 yuan. For example, in some shops in Jinan, the price of 1-carat cultivation diamonds of average quality is 1500 - 2000 yuan.

Diamond fineness grade and purity chart

Diamond Quality Level- DEF Level: Diamonds at the three levels D, E, and F are extremely good in quality, and D Level is regarded as the highest quality. - Grade G~J: These levels of diamonds are difficult to find color defects during daily observation, but they may appear slightly yellow compared with DEF grade. - K-Z grade: The price is more people-friendly, and the color and quality are relatively poor. The difference in color can be observed with the naked eye.

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.

Diamond quality grades are divided into DEF, G-J, and K-Z, of which D-grade is the highest quality diamond grade. According to purity, diamonds are divided into FL, IF, and VVSVSSISIIII 3 levels, of which FL is the diamond with the highest purity. Diamond Quality Level DEF Among the diamond quality levels, diamonds of the three levels D, E, and F have relatively good texture. Among them, D-level diamonds are the highest quality in the diamond world.

Color grade: The color grade of a diamond is represented by the letter DZ, and there are 23 grades in total. Level D is the highest level and represents complete colorless. As the letters move backwards, the color of the diamond gradually deepens. Purity level: FL: Immaculate level, no inclusions or surface features can be found in the diamond under a 10x magnifying glass. IF: Internal Immaculate Level, the diamond is immaculate internally, but may have minute surface features.

How to distinguish the level of diamonds (how to distinguish the level of diamonds)

Diamond grades are mainly distinguished from four aspects: weight, color, clarity and cutting: weight The weight of a diamond is in carats (ct), and 1 carat is equal to 200 mg or 0.2 grams. According to the weight, diamonds can be divided into seven grades: - 0.30ct~0.39ct: small carat diamonds, suitable for daily wear. - 0.40ct~0.49ct: A slightly larger carat grade, the price is relatively reasonable.

The grade (grade) of diamonds is mainly distinguished by the 4C standards, namely color (Color), cut (Cut), clarity (Clarity) and weight (Carat). The following is a detailed differentiation method: The color grades of color diamonds are divided into 23 levels from D to Z. Grade D is the highest level, which means that diamonds are completely transparent, extremely rare and expensive. As the level decreases, the diamond will gradually turn yellow or tan.

Diamond levels are mainly divided into four aspects: color, clarity, cutting and quality, referred to as 4C grading. The specific differentiation method is as follows: Color level classification standard: Divide into 12 consecutive color levels according to the color change of diamonds, using the English letter D-N means that D is the whitest and decreases to N level in turn. Specific grading: Grade D-F: colorless and transparent, colorless when observed with the naked eye. Grade D is the highest level and has the highest value.

Carats Carats are a measure of diamond weight and an important factor in distinguishing diamond grades.

The level of diamond rings is mainly identified from four aspects: clarity level, color level, cutting level and carat size. The clarity of a diamond refers to the degree of flaws on the inside and surface of the diamond. The clarity levels are divided into FL (perfect) level, IF (internal imperfections) level, VVS (extremely slight imperfections) level, VS (slight imperfections) level, SI (small inclusions) level and P (inclusions) level from high to low.

Color grade: 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.