the quarterly journal of the gemological institute of america
Previous IssueSpring 2024 - Volume 60, Issue 1
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the quarterly journal of the gemological institute of america
Gems & Gemology Turns 90!
Duncan Pay, Editor-in-Chief
An overview of the Spring 2024 Gems & Gemology content.
Articles (4)
Mineralogy and Geochemistry of Turquoise from Tianhu East, Xinjiang, China
Examines turquoise from northern China and identifies a geographic origin indicator to distinguish it from other Chinese sources.
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“Ice Jade” from Guatemala
Characterizes a translucent variety of jadeite jade from the Morales mine in Guatemala.
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Nanoscale Techniques for Characterizing Gemstone Coatings: A Case Study on Synthetic Moissanite
Provides a basis for analyzing colored coatings on a variety of polished gemstones.
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Regular Features
Gem News International
Global coverage of gem sources, notable new gem materials, and recent industry developments.
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Special Features
In the Spotlight
A platinum necklace featuring 28 rare garnets won two 2023 AGTA Spectrum Awards.
Most Valuable Article Awards
Yellow Sapphire: Natural, Heat-Treated, Beryllium-Diffused, and Synthetic
John L. Emmett, Ungkhana Atikarnsakul, Jennifer Stone-Sundberg, and Supharart Sangsawong
Gemological Characterization of Montana Sapphire from the Secondary Deposits at Rock Creek, Missouri River, and Dry Cottonwood Creek
Aaron C. Palke, Nathan D. Renfro, Jeffrey R. Hapeman, and Richard B. Berg
Color Modification of Spinel by Nickel Diffusion: A New Treatment
Michael Jollands, Abadie Ludlam, Aaron C. Palke, Wim Vertriest, Shiyun Jin, Pamela Cevallos, Sarah Arden, Elina Myagkaya, Ulrika D’Haenens-Johannson, Vararut Weeramongkhonlert, and Ziyin Sun
Special Colors and Optical Effects of Oregon Sunstone: Absorption, Scattering, Pleochroism, and Color Zoning
Shiyun Jin, Aaron C. Palke, Nathan D. Renfro, and Ziyin Sun
the archive
past gems & gemology issues
Spring 2024
Volume 60, Issue 1
Winter 2023
Volume 59, Issue 4
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Winter 1934
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