A diamond certificate, also called a diamond grading report , diamond dossier ® or diamondquality report , is a report created by a gemmologist, or gemmologists, who have scrutinizedthe diamond and placed it under a microscope to analyse its dimensions, clarity, cut, colour,finish, symmetry, and other characteristics.
There are some of the most respected laboratories in the diamond industry. These laboratories are known for having the most strict, consistent, and unbiased systems for grading diamonds. Diamonds that are accompanied by these grading reports are the most highly valued in the industry, as their quality is considered guaranteed.
Gemological Institute of America (GIA)
Antwerp Diamond High Council (HRD)
American Gem Society Laboratories(AGS)
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