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  The certificate
is a diamond grading report, describing objective factors, both qualitative
and quantitative, and an almost infinite combination of all of the variables,
based on the 4 c's (cut, clarity, color, and carat), measurements, and
physical properties, define each stone: |
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Its weight. |
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Its clarity. |
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Its color and fluorescence. |
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Its proportions. |
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Its finish. |
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Its measurements: diameter,
height or thickness, minimum and maximum diameter with the girdle. |
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Any defect of the stone structure
must be noted on the certificate, example: possible trace of laser drilling or « rough » trace. |
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Upon request, the
diamond can be sealed in a plastic holder together with a microfilm
of the certificate. Not only does the sealing keep the diamond safe from damage,
grease and dirt, it is also a guarantee that a given certificate and the
accompanying stone actually belong together. |
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 Laser inscription of diamonds
is a process of using a very fine, precise laser beam to write a customized
personal message (« I love you », « Marry me », etc...) or certificate
number on the girdle. The laser inscription is microscopic, totally
invisible to the naked eye. It can only be seen with a jewelers' 10x
magnifying loupe and it does not change the color grade or clarity grade of a diamond. |
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Be careful with these terms:
« clarity enhanced » and « color enhanced » which are reproduced
sometimes on the certificates. It means that you are in the presence of a
diamond whose clarity (or color) was modified, in order to improve it. This
term is noted on the certificate in the section « Comments ». It is sold at a discounted price. |
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Gemological Certificate
Date of appearance
