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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 ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; ... Gemological Science International; Gemology; German Gemmological Association; I.
Gemological identification *** Is there a mineralogical equivalent page? If so could it be used in place of this redlink? Gemological appraisal; Gemological grading laboratories. American Gem Society Laboratory ***check name*** Gemological Institute of America, Gem Trade Laboratory ***check name*** European Gemological Laboratory
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The clarity grading system developed by the GIA has been used throughout the industry as well as by other diamond grading agencies including the American Gemological Society (AGS), and the International Gemological Institute (IGI). There are other smaller labs which use the GIA system as well.
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