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Diamond Clarity
Diamond Color
Diamond Cut
Diamond Lab
Diamond Polish
Diamond Symmetry
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F: Flawless: No internal or external flaws. Extremely Rare
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IF: Internally Flawless: no internal flaws, but some surface
flaws. Very rare.
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VVS1-VVS2: Very Very Slightly Included (two grades). Minute
inclusions very difficult to detect under 10x magnification by a trained gemologist.
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VS1-VS2: Very Slightly Included (two grades). Minute inclusions
seen only under 10x magnification.
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SI1-SI2: Slightly Included (two grades). Minute inclusions
more easily detected under 10x magnification.
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D: D is the highest color grade and is an extremely rare diamond
since it is considered colorless.
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E: E has almost no color that can only be detected by a gemologist,
and is a rare diamond.
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F: F is still considered colorless with only a very slight
hint of color, and is rated a high quality diamond.
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G: G is a high quality diamond that is nearly colorless.
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H: H is a high quality diamond that is nearly colorless.
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I: I has only a slight hint of color and is rated a top value.
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J: J has slightly more color and is rated a top value.
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K-M: These diamonds may appear yellow or slightly brown depending
on the cut grade.
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Excellent: Excellent cut reflects most of the light and is
an exceptional quality diamond.
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Very Good: Very good cut reflects most of the light and is
considered an excellent value.
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Good: Good cut grade reflects a good amount of light, although
less than a very good cut grade.
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Fair: This diamond will produce a fair amount of brilliance,
although less than a higher grade of cut.
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Laboratory- A institution that provides professional unbiased
opinions of diamond attributes including shape, dimensions, carat weight, clarity,
color, and fluorescence. These characteristics reflect the value of the diamond.
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Certificate- a written report prepared by a trained gemologist
detailing the characteristics of a diamond. A certificate from a respected gemological
laboratory provides important information and assurance about the quality of your
diamond.
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Laboratories- Many laboratories are displayed as three letter
acronyms or abbreviations. These are the initial letters of the words of the phrase
abbreviated, and are written in upper case capital letters.
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GIA- Gemological Institute of America
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AGS- American Gem Society
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IGI- International Gemological Institute
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HRD- Dutch abbreviation for Hoge Raad vor Diamant-Diamond
High Council
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EGL USA- European Gemological Laboratory located in the USA
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Excellent: ranges from no polish features to a few minute
polish features that can be viewed with difficulty face-up at 10X magnification.
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Very Good: minor polish features are seen face-up at 10X
magnification.
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Good: : noticeable polish features are seen face-up at 10X
magnification. The luster of the diamond may be affected when viewed with the unaided
eye.
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Fair: obvious heavy polish features are seen face-up at 10X
magnification. The luster of the diamond is affected when viewed with the unaided
eye.
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Poor: prominent heavy polish features are seen face-up at
10X magnification. The luster of the diamond is significantly affected when viewed
with the unaided eye.
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Excellent: Rranges from no symmetry features to minute symmetry
features that can be viewed with difficulty face-up at 10X magnification.
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Very Good: Minor symmetry features are seen face-up at 10X
magnification.
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Good: Noticeable symmetry features are seen face-up at 10X
magnification. The diamond’s overall appearance may be affected when viewed with
the unaided eye.
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Fair: Obvious symmetry features are seen face-up at 10X magnification.
The diamond’s overall appearance is often affected when viewed with the unaided
eye.
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Poor: Prominent symmetry features are seen face-up at 10X
magnification. The diamond’s overall appearance is significantly affected when viewed
with the unaided eye.
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