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A New Gem Material from Greenland: Iridescent Orthoamphibole
The Capoeirana Emerald Deposit near Nova Era, Minas Gerais, Brazil
Rainy Lakeside City in Peridot
CVD Laboratory-Grown Gem Diamonds from Plasmability
Infrared Spectroscopy of Natural vs. Synthetic Amethyst: An Update
“Hummingbird” in Orangy Yellow Diamond
Rainbow-Colored Partially Healed Fissure in Blue Sapphire
Patania Jewelry
Identification of “Pistachio” Colored Pearls Treated by Ballerina Pearl Co.
A report on the color treatment process for these intensely greenish yellow to yellowish green cultured pearls and the techniques for identifying them.
Gem Art of the Taj Mahal, Fancy White and Black Diamonds, and Unique Inclusions in Thai Corundum
Fire Obsidian’s Beguiling Spectrum
Gem Topaz from the Schneckenstein Crag, Saxony, Germany: Mineralogical Characterization and Luminescence
Characterizes yellow topaz from this historical source, with particular emphasis on its photo luminescence behavior.