The International Gemological Institute (IGI) is a world-class consumer appraisal and diamond grading laboratory. IGI issues grading reports that certify a diamond’s authenticity and grade it based on an internationally recognized standard.

An IGI Diamond Report can provide facts about a diamond’s physical characteristics, as well as its optical symmetry.

An IGI Report captures a diamond's traditional "4C" characteristics: cut, color, clarity, and carat weight.

An IGI Hearts & Arrows Diamond Report evaluates the care and precision of a diamond’s craftsmanship.