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Laboratory-treated gemstones

James E. Shigley and Shane F. McClure
Laboratory-treated gemstones
Elements (June 2009) 5 (3): 175-178


Treatment processes to improve the color, appearance, and/or durability of certain gemstones have been used for hundreds of years, and their variety, sophistication, and application within the jewelry trade have increased over the past several decades. Whether or not these enhancement processes are considered acceptable trade practices, their use must legally be disclosed at the time of gemstone sales. Disclosure of treatment information requires that treated gems be correctly identified by gemologists and gem testing laboratories. Treatment detection is based upon careful documentation of the properties of gem materials, including the use of advanced nondestructive techniques for obtaining chemical and spectral data.

ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 5
Serial Issue: 3
Title: Laboratory-treated gemstones
Affiliation: Gemological Institute of America, Carlsbad, CA, United States
Pages: 175-178
Published: 200906
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society, International
References: 10
Accession Number: 2009-066480
Categories: Economic geology, geology of nonmetal deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200936
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