International Gemological Institute

International Gemological Institute (IGI) is the world's largest gemological institute, with 30 laboratories and 19 schools in 10 countries, boasting a workforce of over 1,000 experts dedicated to industry service and consumer protection. Since 1975, IGI has been a global leader in accreditation, offering best-in-class services and innovative offerings that empower confidence and trust in the diamond, gemstone, and jewelry industry.

With five decades of expertise, IGI grades more diamonds, gemstones, and jewelry around the world than any other organization. Their grading reports serve as the common language of trust and confidence in the gemological world, providing essential information on natural and lab-grown diamonds, finished jewelry, and colored gemstones to consumers and industry professionals alike.

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