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Chart of Commercially Available Gem Treatments - Provides a comprehensive, easy-to-use reference to the most common gem enhancements on the market today and their detectability
Gems and gemology , 2002
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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NOTES AND NEW TECHNIQUES - A New Method for Imitating Asterism - A new polishing process is being used to create the appearance of asterism in gems that have seldom if ever shown this phenomenon previously
Gems and gemology , 2001
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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FEATURE ARTICLES - Hydrothermal Synthetic Red Beryl from the Institute of Crystallography, Moscow - Grown to mimic the beautiful red beryl from Utah, this synthetic can be identified by its internal growth zoning, chemistry, and spectral features
Gems and gemology , 2001
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Pezzattaite from Ambatovita, Madagascar: A Now Gem Mineral - A look at the history, geology, composition, and properties of this new cesium-rich member of the beryl group
Gems and gemology , 2003
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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ABSTRACTS OF FEATURE PRESENTATIONS - BY SESSION - GEM IDENTIFICATION - Identification Challenges of the New Millennium
Gems and gemology , 1999
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Lab-Grown Colored Diamonds from Chatham Created Gems - Identifying characteristics of yellow, blue, green, and pink synthetic diamonds from a new commercial source in Asia
Gems and gemology , 2004
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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An Update on Imperial Topaz from the Capao Mine, Minas Gerais, Brazil
Gems and gemology , 1996
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Some Gemological Challenges in Identifying Black Opaque Gem Materials
Gems and gemology , 1996
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Beryllium Diffusion of Ruby and Sapphire - An in-depth report on the process and characteristics of beryllium diffusion into corundum. Examination of hundreds of Be-diffused sapphires revealed that, in many instances, standard gemological tests can help identify these treated corundums
Gems and gemology , 2003
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Russian Synthetic Pink Quartz
Gems and gemology , 1998
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Synthetic Moissanite: A New Diamond Substitute
Gems and gemology , 1997
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Identification and Durability of Lead Glass-Filled Rubies - Reports on the identifying features of rubies filled with a high-lead-content glass to make them appear more transparent
Gems and gemology , 2006
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Pink-to-Red Coral: A Guide to Determining Origin of Color - This research report explores the identifying characteristics of natural vs. dyed pink-to-red coral
Gems and gemology , 2007
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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FEATURE ARTICLES - The Identification of Zachery-Treated Turquoise
Gems and gemology , 1999
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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NOTES AND NEW TECHNIQUES - Coated Tanzanite - Identifies a new tanzanite coating through microscopic examination as well as EDXRF and LA-ICP-MS analyses
Gems and gemology , 2008
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Gray-to-Blue-to-Violet Hydrogen-Rich Diamonds from The Argyle Mine, Australia - Famed for its pink and "champagne" diamonds, Argyle is the only known source of the rare type IaB hydrogen-rich diamonds colored gray to blue to violet
Gems and gemology , 2009
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft