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A diamond certificate, also called a diamond grading report, or diamond quality document, is a report created by a team of gemologists. The diamond is assayed, gauged, and closely examined through the eyes of a certified and experienced gemologist, then a jeweler’s loupe, then a microscope in addition to other industry tools. A completed certificate includes an analysis of the diamond’s dimensions, clarity, color, polish, symmetry, and other characteristics. Many round diamonds will also include a cut grade on the report.

DiamondBuyerNYC are Certified

Every loose diamond sold by DiamondBuyerNYC has been analyzed and graded by either the Gemological Institute of America (GIA) or the American Gem Society Laboratories (AGSL). These two laboratories are among the most respected laboratories in the diamond industry, and are known for their consistency and unbiased diamond grading systems. Diamonds that are accompanied by these grading reports are the most highly valued in the industry.

View Certificates While Shopping

If you are interested in a specific certified diamond at DiamondBuyerNYC, you can view its certificate purchase. We offer a variety of grading reports and documentation:

  • GIA Diamond Grading Report
  • GIA Diamond Dossier®
  • AGSL Diamond Quality Document
  • GCAL Certificate of Diamond Authenticity
  • Lion Diamond Appraisal

If you are interested in a diamond and a certificate is not available for viewing on the site, simply contact a diamond and jewelry consultant at or855-289-3769.