Diamond Grading Reports
Diamond Grading Reports are known by many names: Diamond Dossier®, Diamond Quality Document, etc. The name that is most often improperly used is the Diamond Certificate.
When you read disclaimers from the leading labs, you will notice a commonality. They don’t certify anything. They simply state what is seen in the diamond.
Some of these labs are held in greater esteem within the jewelry industry, because of their more stringent standards. You’ll see this reflected in different ways: price differences, references in various trade journals, etc.
Here are the most common laboratories from which you will see reports issued and what their disclaimers say:
AGS
American Gem Society Laboratories™
EGL USA
GIA
Gemological Institute of America®
HRD Antwerp
IGI
International Gemological Institute