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Article: International Gemological Institute

International Gemological Institute

Operations and Services

  • IGI has a staff of over 650 gemologists, appraisers, and professional office personnel.
  • IGI has been at the forefront of technology since its commencement in 1975.
  • IGI has created an Online Data Retrieval program and Registration and Recovery Service.
  • IGI is developing methods to reliably distinguish between synthetic and natural diamonds.
  • IGI provides services to diamond dealers and jewelry manufacturers, including grading reports, identification and appraisal reports, authentication and attestations of origin, and laser inscription services.

Market Position and Certifications

  • IGI is the largest laboratory for certification of diamonds and fine jewelry.
  • IGI has the only international certification lab controlled by one central governing body.
  • IGI adheres to one internationally accepted system for diamond grading.
  • IGI is ISO 9001:2000 certified in four countries.
  • IGI collaborates with the Tanzanite Foundation for jewelry certificates using the Tanzanite Quality Scale.


  • IGI collaborated with the Tanzanite Foundation to create the Tanzanite Quality Scale.
  • IGI opened a laboratory in Surat, India, marking its fifth diamond grading laboratory in India.


  • Jewelers Inc. article on International Gemological Institute.
  • Blackstone acquires International Gemological Institute.
  • Mid-America Jewelry News article on IGI's online services.
  • article on IGI offering a Rough Diamond course.
  • JCK Online article about IGI.

Further Reading:

  • Business Standard article on IGI's plans for a testing laboratory in New Delhi.
  • Diamond World News Service article on IGI labs becoming ISO certified.
  • Article on the importance of diamond certificates in the industry.
  • New York Times article on adding brand names to nameless stones.
  • Europa Star article on International Gemological Institute.

International Gemological Institute Data Sources

Reference URL
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