Based on the factors mentioned above, a diamond’s clarity is subjective graded and set in a range. This range is known as the diamond clarity scale. It was created by GIA and is the industry wide standard for diamond grading and comparison. This diamond clarity rating is the one that is most respected for accuracy and consistency.


The GIA grading scale for symmetry from best to worst is: Excellent; Very Good; Good; Fair; Poor. Fluorescence: Fluorescence is the impact that UV light has on a  

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Se hela listan på If you’ve ever looked for a diamond to buy, perhaps you’ve come across the widely used color grading scale of the GIA (Gemological Institute of America). And you may have also heard that there is the so-called Argyle color grading scale. Let’s see what this scale is and how it compares to that of the GIA. Diamonds are graded based on a system of 4Cs that was created by GIA. Color is one of the elements that makes up a key component in a diamond’s value. In white or colorless diamonds, the absence of color drives the value of the stone upwards due to relative rarity in nature. A diamond’s clarity, or its relative lack of inclusions and blemishes, is graded on a scale ranging from Flawless to Included. The size, number, position, relief, and the type of inclusion or blemish present, and how easily they can be seen at 10X magnification determine a diamond’s clarity grade. There are many grading scales used to describe diamond clarity; however, the diamond grading scale used by the Gemological Institute of America (GIA) is probably the most well known.

All GSI grading reports (often called “GSI Certificates”) are available online in PDF format.

Explore the four criteria used in the diamond industry and at Hands Jewelers to The GIA grading scale for color ranges from D-Z, classifying a stone based on 

DIAMOND GRADING CHART CLARITY Internally Flawless Very Very Slightly Included Very Slightly Included Slightly Included Included I.F. VVS 1 VVS 2 VS 1 VS 2 SI 1 SI 2 I 1 I 2 I 3 CARAT COLOR D - F Colorless G - J Near Colorless K - M Slightly Tinted N - R Very Light S - Z Light CUT Total Depth Crown Table Width Angle Pavilion Angle Girdle Diamond Grading Scale DSG grades all cards using our own proprietary program (Patent Pending) which has been developed over the course of the 20 years experience the founders have in the card grading industry. The GIA grades diamonds on a scale of D (colorless) through Z (light color).

Diamond grading scales

Diamond is the hardest mineral, because it can scratch all other materials. The hardness assigned to diamond is 10.0. Talc is one of the softest; almost any other 

Diamond Grading Scale GEM MINT 10. Four sharp corners, free of stains, no breaks in surface gloss and no visible wear. A slight print spot MINT 9. One very slight hit to a corner or two very minor flaws to the surface or edges may exist, such as a slight NM/MINT 8. A few small flaws may exist GRADING RESULTS Carat Weight 2.71 CARATS Color Grade F Clarity Grade VVS 2 Cut Grade IDEAL Medium (Faceted) 15.5% 55.5% 35.1° 43% 40.7° Pointed ADDITIONAL GRADING INFORMATION Polish EXCELLENT Symmetry EXCELLENT Fluorescence NONE Inscription(s) LABGROWN IGI LG407943376 Comments: This Laboratory grown diamond was created by Diamonds with more depth of color than Z color fall into the fancy color diamond range. Grading begins with the letter D, (omitting A, B, C) to ensure that there is no confusion with any of the previous terminology that was used prior to the standardization of the color grading scale.

Clarity. Inclusions are a natural  Clarity / GIA Clarity Grading Scale Clarity refers to the summation of the number, size and placement as well as the nature of inclusions and/or surface  The Colour Scale: Comparing Diamond Colours. As diamonds are formed deep within the Earth's mantle, trace amounts of nitrogen mix with the carbon and give   It became a worldwide standard for grading and valuing diamonds. Some independent Color is graded on a scale that starts at D as the highest color grade. 20 Dec 2019 Diamond Grading for Cut (Shape & Sparkle). How it's Graded: Face up (the way you'd set it), without magnification; Scale: Excellent, Very Good  Hooded sweatshirt in black with blue Eliantte diamond grading scale on the chest . Metal eyelets and drawstring.
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Diamond grading scales

Diamond Color Grades as Ranges Consumers and vendors pay a great deal of attention to specific color grades when a stone sits on the high end of the scale. Once colors move past K, however, the grades are often given as ranges, such as U-V, W-X, and Y-Z. DIAMOND GRADING CHART Every diamond certified by the GIA undergoes a thorough, independent evaluation.

GSI diamond grading reports and colored stone grading reports vary in the amount of information provided, formats, sizes, and layouts.
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GIA's 4Cs app features video and interactive tools that teach consumers about how GIA grades color, cut, clarity and carat weight. It explains GIA's D-to-Z color 

Natural diamonds having less color are rarer; therefore, they may cost more. When writing the grades of a diamond using the AGS Scale, DIAMOND GRADING CHART.

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Color: The classification of body color of cut diamonds. One of the “four C’s” in diamond grading. There are several color grading scales used throughout the world, the scale used in this report is that of the GIA. The range is from colorless (“D”) to yellow, brown or grey (“Z”), beyond is termed Fancy.

The grading process involves a skilled gemologist who examines the diamond under a 10X powered microscope .