One of the World’s Largest Independent Grading and Accreditation Services Providers

With 31 laboratories and 18 schools in 10 countries, IGI employs a global workforce of experts and educators dedicated to industry service and consumer protection.

Verify Your Report

IGI’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.

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Jewelry Report

IGI pioneered grading reports for finished jewelry, providing peace of mind for millions of consumers who purchase jewelry every day.

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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.

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Explore the IGI GemBlog

Composed by IGI experts and prominent guest authors, our cutting edge content is perfect for sharing with family and friends who appreciate gemology, science, history, and entertainment.

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