50 Years of Innovation and Leadership
A global leader in accreditation with best-in-class services and innovative offerings, IGI has been empowering confidence and trust in the diamond, gemstone and jewelry industry since 1975.
About IGIGrading & Certification
With five decades of expertise, IGI grades diamonds, gemstones and jewelry in more locations around the world than any other organization
Learn MoreAccreditation
IGI is the first global institute to hold ISO accreditation in both natural and lab grown diamond grading
Learn MoreEducation
IGI’s Schools of Gemology are unrivaled in diversity, reach, and practicality with courses offered in-person and online via eLearning
Learn MoreESG
IGI is equally committed to all three facets of ESG – focusing on environmental, social and governance matters internally and externally
Learn MoreIGI’s supreme position in the gemological world is no coincidence. It is the result of continuous research, support and synergy with professionals and consumers alike.
IGI reports
IGI grading reports play an essential role in the global diamond, gem and jewelry market, serving as the common language of trust and confidence in the gemological world.
Colored Stone Report
IGI analyzes every gemstone to identify species and variety, provide detailed information and disclose any treatments that may be present.
Jewelry Report
IGI pioneered grading reports for finished jewelry, providing peace of mind for millions of consumers who purchase jewelry every day.
Diamond Reports
IGI’s loose diamond reports clearly identify natural or lab grown origin and document all aspects of the diamond’s value-setting 4Cs.
IGI Education
Offering more courses in more locations around the world, IGI’s schools of gemology are unrivaled in diversity and reach, offered in-person and online via customizable webinars and eLearning programs.
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