With over 650 gemologists and other jewelry professionals, New Delhi, Surat, Honk Kong, Dubai, Shanghai, and Tel Aviv, and among others. The companyĪlso has offices in several diamond centers around the world such as New York, It is headquartered in the heart of theĭiamond trade, Antwerp (where De Beers also has major operations). The International Gemological Institute is the largest They have 9 laboratories, 4 research centers, and operate in 13 countries. GIA also trains gemologists and has 11 campuses. Introduced the International Diamond Grading System (known as theĬlarity color, and carat weight) in 1953. Industry was able to use one unified method for grading diamonds and otherĪs a result of their dedication and hard work, GIA GIA wanted to develop a standard so that everyone in the The Gemological Institution of America was founded in 1931Īs a non-profit institution dedicated to the research, education and grading of Loose diamonds as well as to avoid making certain mistakes. Our tips below carefully so you know exactly what you are in for in order to However, if you are considering an IGI graded diamond, read In a nutshell, IGI is not as consistent or strict in gradingĭiamonds as GIA. While both GIA and IGI are reputable labs, there is noticeable Very large institution, and it has been around since 1975. The International Gemological Institute or IGI is also a It is very consistent, and a standard bearer The Gemological Institute of America or GIA IGI is improving, but is still not on par with GIA.
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