Gemology
science dealing with natural and artificial gems and gemstones
Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is a specific interdisciplinary branch of mineralogy. Some jewelers (and many non-jewelers) are academically trained gemologists and are qualified to identify and evaluate gems.
History
Rudimentary education in gemology for jewellers and gemologists began in the nineteenth century, but the first qualifications were instigated after the National Association of Goldsmiths of Great Britain (NAG) set up as an Education Committee for this purpose in 1908. The committee emerged as a distinct branch of NAG (named the Gemmological Association) in 1931, shortly after the incorporation of the Gemological Institute of America (GIA). In 1938 the branch was renamed as the Gemmological Association of Great Britain, before being incorporated in 1947. The organisation is now an educational charity and accredited awarding body with its courses taught worldwide.
The first US graduate of Gem-A's diploma course, in 1929, was Robert Shipley, who then established both the Gemological Institute of America and the American Gem Society. 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.
This brief starts where responsible research should: with the source description of “Gemology” as science dealing with natural and artificial gems and gemstones. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as science dealing with natural and artificial gems and gemstones. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated May 22, 2026. The linked authority identifier is Q243330. The Library of Congress control number is sh2011001743. 1 of 1 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1908, 1931, 1938 and 1947.
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This entry incorporates text from “Gemology” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.