GIA Diamond Certification

Learn About GIA Certified Diamonds

A GIA Diamond is a diamond certified by the Gemological Institute of America, the World's foremost authority in independent third-party diamond certification. GIA diamonds are examined by a minimum of four highly trained diamond graders and gemologists. At each step of a diamond's evaluation, a more senior staff member independently grades the stone.

The GIA's mission is to increase consumers' trust in diamonds and jewelry by upholding the highest standards of integrity, academics, science, and professionalism. They work toward this goal by providing jeweler and consumer education, conducting meticulous research, and developing state-of-the-art laboratory instruments for diamond inspections.

GIA Diamond Grading Standards

GIA diamonds are examined by a minimum of four highly trained diamond graders and gemologists. At each step of a diamond's evaluation, a more senior staff member independently grades the stone. To ensure impartial evaluations, the distribution of diamonds to graders is a completely random process.

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Expert Guidance
Need help? Speak with our Diamond & Jewelry Experts at 866-737-0754 or chat now!
GIA Diamond Grading Report

GIA Diamond Grading Report

The GIA Diamond Grading Report is issued for diamonds that fall in the D-Z color range. This detailed report includes a full quality analysis of shape and cutting style, measurements, carat weight, color grade, clarity grade, cut grade (for brilliant round-cut diamonds), polish and symmetry assessments, and fluorescence.

The report also includes a plotted diagram indicating the relative size and location of clarity characteristics, a proportion diagram, and GIA grading scales.

GIA Diamond Grading Report
GIA Diamond Dossier Report

GIA Diamond Dossier Report

The GIA Diamond Dossier® is issued for diamonds between 0.15 and 1.99 carats that fall in the D-Z color range.

This report includes all of the information featured in the Diamond Grading Report without a plotted diagram. All diamonds accompanied by a Diamond Dossier are laser inscribed and registered in the GIA inscription registry.

GIA Diamond Dossier Report
Brief History of GIA

Brief History of GIA

Gemstone manufacturers from around the globe send diamonds and gems to the GIA for expert examination and analysis.

Founded in 1931, the Gemological Institute of America (GIA) is an independent, non-profit organization widely considered as the world's foremost authority in gemology. Introduced in 1953, their diamond and gemstone grading system is recognized as an accepted standard worldwide.

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Brief History of GIA
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