Imitation Rubellite Boulders
Dyed Green Beryl
Mixing of Natural Diamonds with HPHT Synthetic Melee
The World’s Biggest Diamonds: Windows into the Earth’s Deep Mantle
Coated Beryl Imitating Emerald
Coating on a beryl demonstrates the importance of thorough examination of jewelry and gem materials.
Filled Pearl with Surface Features
Quarterly Crystal: Shattuckite in Quartz
Pink Diamonds, Russia’s Amber Room, and More…
Freshwater Pearls, Blister and Loose, with Their Host Shells
Pink Sapphires from Madagascar, Rose-Cut Colored Stones from the Baroque Era, Separating Blue Amber Localities, and More…
Unique Star Sapphire with Transparent Core
Suggested Reading on Emeralds and their Inclusions
A Preliminary Study on the Separation of Natural and Synthetic Emeralds Using Vibrational Spectroscopy
Reports preliminary findings—based on FTIR and Raman spectrometry of more than 300 samples—on distinguishing natural and synthetic emeralds using vibrational spectroscopy.
Synthetic Moissanite: A New Diamond Substitute
Sapphire Chart Article: Suggested Reading on Sapphires and Their Inclusions
A New Find of Danburite in the Luc Yen Mining Area, Vietnam
Reports on a recently discovered eluvial deposit of honey yellow danburite with excellent transparency.
Characterization of Chinese Hydrothermal Synthetic Emerald
Synthetic emeralds grown hydrothermally in an alkali-free, chlorine-bearing solution have been manufactured in Guilin, China, since 1987.
Suggested Reading on Rubies and Their Inclusions
Suggested Reading on Rubies and Their Inclusions
Data Supplement
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
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