With more locations around the globe than any other gem testing laboratory, IGI is the world's most trusted name for the expert and impartial grading of diamonds, gemstones and jewelry. Gemstones should only change hands when accompanied by a certificate attesting to quality. Regardless of location or marketplace, an authentic IGI Laboratory Report is the common language of trust and confidence in the gemological world, and should be considered an essential part of any transaction. We take this responsibility very seriously.

A stamp from IGI represents the all-important 5th C that no one should be without: Confidence of certification. 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.

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.

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 to provide repair and re-cut of diamonds
IGI is the first lab to seal diamonds for protection purposes
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