How to Read a Diamond Report...
At first glance a Diamond Grading Report may be confusing. Here is a quick reference to certifications.
Mouse over different parts of the Certificate to read further explanations.
Legend
|
Date:
|
|
Date Report Issued |
|
Shape and Cutting:
|
Description of the outline of the diamond (shape) and the pattern of the facet arrangement (cutting style) |
|
Measurements:
|
The diamond dimensions in millimeters. Dimensions listed as: minimum diameter x maximum diameter x depth (for round diamonds).Length x width x depth (for fancy shapes) |
|
Weight:
|
Weight of diamond listed to the nearest hundredth of a carat. One carat equals t/5 gram |
|
Depth:
|
Depth (for round diamonds) and/or width (for fancy shapes) relative to diameter |
|
Table:
|
Table facet (for round diamonds) and/or width (for fancy shapes) relative to the diameter |
|
Girdle:
|
Range of girdle thickness. Polished or faceted, if applicable |
|
Culet:
|
Appearance of the culet facet |
|
Finish:
|
Grades of polish and symmetry. Represent quality of surface condition (polish); and the size, shape and placement of the facets, including evenness of shape's outline (symmetry) |
|
Clarity:
|
Clarity grade determined under 10x magnification. Internal (inclusions) and external (blemishes) |
|
Clarity Plot:
|
A map of the appropriate size, shape, type and position of inclusions as viewed under a microscope |
|
Color:
|
Grade of color; ranges from D (highest colorless) to Z (lowest yellow) |
|
Fluorescence:
|
Color and strength of color when diamond is viewed under UV light |
|
Keys to Symbols:
|
Illustrates and lists the characteristics and symbols shown on diagram, if present |
|
