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Near-Colorless HPHT Synthetic Diamonds from AOTC Group - Presents the gemological and spectroscopic properties of a suite of synthetic diamonds grown by AOTC using high pressure and high temperature
Gems and gemology , 2014
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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The Impact of Internal Whitish and Reflective Graining on the Clarity Grading of D-to-Z Color Diamonds at the GIA Laboratory - A study of two important types of graining and how GIA determines their impact on a diamond's clarity grade
Gems and gemology , 2006
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Identification of "Chocolate Pearls" Treated by Ballerina Pearl Co. - Examines the "chocolate" color treatment process for cultured pearls and techniques for identifying these products
Gems and gemology , 2006
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Serenity Coated Colored Diamonds: Detection and Durability - A new multi-layer coating technique produces a variety of evenly distributed, natural-appearing colors on diamonds, but with limited durability
Gems and gemology , 2007
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Gem-Quality Synthetic Diamonds Grown by a Chemical Vapor Deposition (CVD) Method - Description and identifying characteristics of Apollo Diamond Inc.'s facetable, single-crystal type Ila CVD-grown synthetic diamonds
Gems and gemology , 2003
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Rough The Wittelsbach-Graff and Hope Diamonds: Not Cut from the Same Two famous diamonds are tested to see if they originated from the same crystal
Gems and gemology , 2010
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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Treated-Color Pink-to-Red Diamonds from Lucent Diamonds Inc. - A report on the gemological properties and identifying characteristics of the new treated-color natural diamonds from Lucent Diamonds
Gems and gemology , 2005
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Characterization and Grading of Natural-Color Yellow Diamonds - Using a sample base of more than 24,000, this article explores the color grading of natural-color yellow diamonds at the GIA Gem Laboratory and reports on their gemological and spectroscopic properties
Gems and gemology , 2005
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Experimental CVD Synthetic Diamonds from LIMHP-CNRS, France - Reports on the properties and identification features of six CVD synthetic diamonds grown for experimental purposes at the LIMHP-CNRS laboratory in Paris
Gems and gemology , 2005
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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The Effects of Heat Treatment on Zircon Inclusions In Madagascar Sapphires - Documents the alteration of zircon inclusions during heat treatment of sapphires at different temperatures
Gems and gemology , 2006
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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Latest-Generation CVD-Grown Synthetic Diamonds from Apollo Diamond Inc. - Presents the gemological and spectroscopic properties of Apollo's latest products, which show significant improvements in size, color, and clarity
Gems and gemology , 2007
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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RAPID COMMUNICATIONS - Natural Type la Diamond with Green-Yellow Color Due to Ni-Related Defects
Gems and gemology , 2007
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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CVD Synthetic Diamonds from Gemesis Corp. - The new CVD-grown synthetics from Gemesis, which are comparable in color and clarity to top-quality natural diamonds, are entirely identifiable with proper techniques
Gems and gemology , 2012
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Strongly Colored Pink CVD Lab-Grown Diamonds - A new generation of CVD lab-grown diamonds from Apollo Diamond Inc
Gems and gemology , 2010
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Synthetic Gem Materials in the 2000s: A Decade in Review Looks back on an eventful decade in the synthetic gem industry, highlighted by the commercial introduction of faceted gem-quality CVD synthetic diamonds
Gems and gemology , 2010
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft