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The first GIA gemological laboratory was established in Los Angeles in 1931. Shortly thereafter, the institute introduced the "Certified Gemologist" professional designation. [ 4 ] Vincent Manson , then Director of Strategic Planning, moved the GIA campus and headquarters to Carlsbad, California.
The European Gemological Laboratory (EGL) introduced the SI3 as a clarity grade. While intended as a range to include borderline SI2 / I1 stones, it is now commonly used to mean I1's which are nearly "eye clean", that is, which have inclusions which are not obviously visible to the naked eye.
American Gem Trade Laboratory which is part of the American Gem Trade Association (AGTA), a trade organization of jewelers and dealers of colored stones; American Gemological Laboratories (AGL), owned by Christopher P. Smith; European Gemological Laboratory (EGL), founded in 1974 by Guy Margel in Belgium
Various labs around the world are using ImaGem's VeriGem device to measure light behavior. DGLA in the US and Mumbai, India, PGGL in the US and EGL-USA are both offering versions of this grading in 2008. DGLA has graded thousands of diamonds with this promising direct assessment technology.
Scarratt has authored or co-authored articles in many gemological magazines and journals worldwide, and has co-authored two books: The Pearl and the Dragon. A Study of Vietnamese Pearls and a History of the Oriental Pearl Trade , [ 6 ] [ 7 ] and The Crown Jewels: The History of the Coronation Regalia in the Jewel House of the Tower of London .
He moved to Houston in 1980, and in March 1984, Crane borrowed $10,000 from his sister and founded Eagle USA Airfreight, an air-freight logistics business. [ 10 ] [ 11 ] Eagle USA Airfreight later became Eagle Global Logistics, and then EGL, Inc., and moved into the supply-chain management and information-services business.
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