| It is important that diamonds used in jewelry appear beautiful to the unaided eye and contain no defects that are visible under 10-power magnification. When several diamonds are used together, it is essential that they match in brilliancy and contribute to the beauty of the jewelry. In a piece that contains several 0.3-carat-size diamonds, for instance, the key point is for them to match in overall brilliance, not that they all have the same grade of D-VVS. Diamond grades are best used as a reference for quality control, such as when specifying G color or better, or VS2 or better. Other than for large, rare diamonds, the indication of detailed grading information for diamonds set in jewelry or the attachment of a grading report has no essential meaning. |
The three quality
zones as shown
on the
quality scale.
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