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Certificate - Diamond Education - NYG Laboratory Resources
Diamond Certification
Diamond Certificates
A certificate is a "BluePrint" of a diamond, it tells you the diamond's exact measurements and weight, as well as the details of its cut and quality.
A diamond certificate, also called a Diamond Grading Report, Diamond Dossier or Diamond Quality Documnet, is a report created by a team of gemologists.
It gives you a detailed scientific analysis of your diamond which is done by an impartial gemological institution, not the grading of the seller.
The diamond is evaluated, measured, and scrutinized using trained eyes, a jeweler’s loupe, a microscope, and other industry tools.
Diamond appraisals tie up any loose ends in a diamond purchase, confirming still that the characteristics of the purchased diamond match not only the description given by the seller but also the description on the diamond certificate.
It precisely points out all the individual characteristics of the stone.
It also serve as proof of the diamond's identity and value.
A certificate describes the quality of a diamond, but it does not place a monetary value on the gem.
A diamond certificate or grading report provides an expert opinion on the quality of the diamond and is provided by an independent gemology lab.
A completed certificate includes an analysis of the diamond’s dimensions, clarity, color, polish, symmetry, and other characteristics.
Diamond Grading Report
Diamond Report Includes
Characteristics of Diamond Documented in the Diamond Grading Report
Certificate Sample Image
Register No : Describes the register number of A Diamond.
Shape and Style : Describes the diamond shape and cutting style.
Measurements : Lists the diamond's dimensions- Length, Width, Depth- in millimeters.
Carat Weight : A weight of diamond listed to the nearest hundredth of a carat.
Color Grade : A grading which assesses the absence of color in a diamond. A grade of color, zero (D) being the most rare and preferable and ten (Z) being the least preferable.
Clarity Grade : Clarity grade of A Diamond. Zero (FL/IF) being the most rare and preferable and ten (I3) signifying the least preferable.
Cut Grade : There are three components that determine a cut grade: Light Performance, Proportion Factors, and Finish.
Light Performance : The overall appearance of the diamond when it is viewed from above. One of the three factors used to determine cut.
Proportion Factors : Proportion Factors determines a diamond's shape, including the proportions, weight ratio and durability. One of the three factors used to determine cut.
Finish : The overall measure of a diamond's polish and symmetry. One of the three factors used to determine cut.
Polish : Rating of the overall smoothness of a diamond's surface.
Symmetry : Symmetry is to, measuring the shape, alignment and placement of the diamond's facets in relation to one another.
Fluorescence : Fluorescence is, Color and Strength of color when diamond is viewed under UV light.
Comments : A description of additional diamond characteristics not already mentioned in the report.
Clarity Plot : A map of the approximate size, type, and position of inclusions as viewed under a microscope.
Proportion Diagram : Proportion Diagram is a map of the diamond's actual proportions.
Depth : The height of a gemstone measured from the culet to the table. Depth - for round diamonds, width - for fancy shapes.
Table : The table is the largest facet of a diamond. Located at the top of the diamond.
Girdle : Range of girdle thickness.
Culet : Appearance, or lack thereof, of the culet facet.
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