Jewelry Glossary

The American Gem Society Laboratories is recognized by the jewelry industry as one of the foremost authorities for grading diamonds. The AGSL issues a number of grading reports: Diamond Quality Reports provide a complete technical grading analysis, including information on proportion, polish and symmetry. Diamond Quality Documents present a complete grading analysis, with a special emphasis on grading the cut along with the polish, proportion and symmetry.

See also: Certification  GIA