IGI International Gemological Institute

IGI is the largest organization of its kind, with offices in Antwerp, New York, Hong Kong, Mumbai, Bangkok, Tokyo, Dubai, Tel Aviv, Cavalese, Toronto, Los Angeles, Kolkata, New Delhi, Thrissur, Surat, Chennai and Shanghai . The IGI School of Gemology operates from Antwerp, Mumbai, Dubai and Cavalese, offering a variety of courses designed for professionals and consumer enthusiasts alike.



A certificate from IGI represents the all-important 5th C that no one should be without: Confidence. As the world's largest independent gem certification and appraisal institute for diamonds, colored gemstones and jewelry, IGI is a standard of excellence for industry professionals and consumers around the globe.



1975 - 1985

IGI was established in 1975 and is today the oldest laboratory in Antwerp

IGI's School of Gemology is first to conduct training courses covering rough diamonds

IGI Laserscribe System Mark patent introduces a method to permanently mark diamonds using laser beams

IGI is the first laboratory to issue Jewelry Identification Reports

IGI is the only laboratory in the world providing repair and re-cut of diamonds

IGI is the first lab to seal diamonds for protection purpose

IGI develops the first comprehensive diamond cut grading chart



1986 - 1999

IGI is first to perform permanent inscription on the table of diamonds, using ion beam technology

IGI Laboratories become fully equipped to identify any kind of synthetic diamond

IGI develops UV-VIS-NIR spectrometer to identify treated diamonds

IGI develops its own photoluminescence spectrometer to identify HPHT-processed diamonds

IGI is the first laboratory to go worldwide under one management. Today 17 offices



2000 – 2010

IGI develops an innovative system for the grading of small diamonds

IGI is the first laboratory to issue co-branded certificates in cooperation with renowned jewelry industry brands

IGI introduces hands-on courses to factories for the purpose of improving manufacturing

IGI introduces supplemental courses to sales people and enthusiasts to improve their professional knowledge

IGI creates the Hearts and Arrows Diamond Reports with worldwide recognition

IGI's supreme position in the gemological world is no coincidence. IT is the result of the continuous research, support, and synergy with professionals and consumers alike. Around the world, IGI certificates bring confidence when buying or selling diamonds, gemstones and jewelry.