International Gemological Institute

IGI - International Gemological Institute, is the world’s largest independent laboratory for grading diamonds and fine jewelry. 

IGI was established in 1975 in Antwerp and has labs in the USA, Belgium, India, Israel, Thailand, China & Japan.

IGI is the largest organization of its kind, operating 20 laboratory locations around the world grading finished jewelry, natural diamonds, lab-grown diamonds and gemstones - and 14 schools of gemology graduating thousands of new jewelry professionals each year.

Services and Reports

IGI offers a comprehensive range of reports that cater to various segments of the gemstone and jewelry market. These include:

• Diamond Reports: Detailed assessments of both natural and lab-grown diamonds, documenting their value-setting characteristics based on the internationally recognized 4Cs: Cut, Clarity, Color, and Carat weight.
• Colored Stone Reports: In-depth analysis of gemstones, identifying species, variety, and any treatments that may be present.
• Jewelry Reports: Pioneering grading reports for finished jewelry, providing consumers with confidence in their purchases.
• Light Performance Reports, Identification Reports, and Fancy Colored Diamond Reports are also available to meet specific needs.

Educational Programs

IGI's commitment to education is evident through its extensive course offerings. The institute provides in-person classes, online eLearning programs, webinars, and customizable workshops. 

These programs are designed for a diverse audience, from consumers looking to make informed purchasing decisions to professionals seeking advanced gemological knowledge.

Consumer Protection and Industry Standards

As a leader in consumer protection, IGI's grading reports serve as a common language of trust and confidence within the gemological world. The institute continually invests in research and development to ensure that its methodologies remain at the forefront of industry standards.

Global Impact

IGI's influence extends beyond certification; it plays a pivotal role in educating the public and professionals alike about the complexities and beauty of gemstones. Through its GemBlog and other outreach initiatives, IGI fosters a global community of diamond, gemstone, and jewelry enthusiasts.