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GSI Gemological Laboratory performs a number of services including: loose and mounted diamonds grading; origin testing of loose and mounted diamonds and gemstones; cut grade analysis; light analysis reports; gemstone identification; sorting and screening of melee; treatment identification; laser inscription on diamonds and gemstones; metal engraving; metal inspection; and 360-degree virtual ...
There are now several professional schools and associations of gemologists and certification programs around the world. The first gemological laboratory serving the jewelry trade was established in London in 1925, prompted by the influx of the newly developed "cultured pearl" and advances in the synthesis of rubies and sapphires. [ 6 ]
A certificate of analysis (COA) is a formal laboratory-prepared document that details the results of (and sometimes the specifications and analytical methods for) one or more laboratory analyses, signed—manually or electronically—by an authorized representative of the entity conducting the analyses. This document gives assurances to the ...
Gem-A emerged from an Education Committee set up by The National Association of Goldsmiths (NAG) in 1908. [1] As the study of gemmology grew in popularity, NAG established the Gemmological Association as an independent branch in October 1931, under the successive presidencies of Henry Miers, William Bragg and Herbert Smith.
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International Gemological Institute (IGI) is a gemological organization which certifies diamond, colored stone and jewelry. It was established in 1975 in Belgium. It was established in 1975 in Belgium.
Universal Gemological Laboratories (GCI) is a gemological laboratory and a college for educational services founded in 1998. The laboratory's main headquarters is in the Israel Diamond Exchange in Ramat Gan .
The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1 ] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.