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Jewelry Education

How to Read an IGI Lab Diamond Report

Learn how to review an IGI lab-grown diamond report, including measurements, cut, color, clarity, polish, symmetry, fluorescence, and inscription.

How to Read an IGI Lab Diamond Report by The Don Jewelers & Jewelry

Confirm identity and origin

Match the report number to the laser inscription where available and confirm that the report identifies the diamond as laboratory grown. The report is a comparison tool, not a substitute for reviewing the actual stone.

Read measurements before carat

Measurements reveal face-up size and shape ratio. Two diamonds at the same carat weight can present differently because depth and proportions distribute weight differently.

Balance grades with visible beauty

Cut, color, clarity, polish, symmetry, and fluorescence help narrow choices. Videos and a jeweler review can reveal bow ties, dark areas, windowing, or inclusions that the summary grades alone do not explain.