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Exploring the Origin and Nature of Luminescent Regions in CVD Synthetic Diamond - Blue to blue-green luminescent zones, seen in the DiamondView instrument, reveal the growth history of some CVD synthetic diamonds
Gems and gemology , 2011
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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EDITORIAL - Enriching a Tradition
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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2014 Gems & Gemology Challenge
Gems and gemology , 2014
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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EDITORIAL - Looking Ahead to 2014
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Recent Advances in Understanding the Geology of Diamonds
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Blue Sapphires from the Baw Mar Mine in Mogok
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Update on Gemstone Mining in Luc Yen, Vietnam
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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NOTES AND NEW TECHNIQUES - Characteristics of Coated Jadeite Jade
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Lab Notes - Black diamond with unusual color origin . Silicon in natural type IIa and type IaB diamond . Stellate inclusions in vivid pink morganite . Spinel submitted as diamond . Large synthetic moissanite with silicon carbide polytypes
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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2013 G&G Challenge Winners
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Agates from Sidi Rahal, in the Atlas Mountains of Morocco: Gemological Characteristics and Proposed Origin
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Auction Houses: A Powerful Market Influence on Major Diamonds and Colored Gemstones - With their high-profile sales and record-breaking hammer prices, Sotheby's and Christie's have become a significant force in gem price and demand
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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A Comparison of Modern and Fossil Ivories Using Multiple Techniques - Provides identification criteria to distinguish between modern and fossil (mammoth) elephant ivory
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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NOTES AND NEW TECHNIQUES - Infrared Spectroscopic Study of Filled Moonstone - A strand of 22 moonstone beads with a suspicious bluish white fluorescence was tested by infrared spectroscopy, which provided conclusive evidence of impregnation by a material with benzene structure
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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The Dr. Edward J. Gübelin Most Valuable Article Award
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Lab Notes - Buff-top round diamond . Large HPHT-treated Fancy pink diamond . Orange diamond with unusual color origin . Pseudo-synthetic growth structure observed in natural diamond . Green diamond, treated with radioactive salt . Diamond with extremely strong 578.9 nm emission center . CVD-grown synthetic with aggregated nitrogen impurities . Three CVD synthetics submitted to GIA's Mumbai laboratory . Very large CVD synthetic . Yellow synthetic sapphire colored by trapped-hole mechanism
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Gem News International - Tucson 2013 . Blue cat's-eye apatite . Stingray skin jewelry . Double-trapiche emerald . Rock buttons from the United States . High-precision colored stone cutting . Musgravite from Myanmar . Opal-calcite composite . Update on sapphire mining in Madagascar . Zoned scapolite from India . Dumortierite-quartz rock . Undisclosed samples of large CVD synthetic diamond
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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Book Reviews/Gemological Abstracts Online Listing
Gems and gemology , 2013
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft
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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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EDITORIAL - Unlocking the Secrets of the Fourth C
Gems and gemology , 2004
Enthalten in: Gems and gemology
OLC Kunst und Kunstwissenschaft