Aegirine in Poudretteite
“Fishbone” Inclusion in a Burmese Peridot from Mogok
Two Pearls of Indian Cultural Significance
Ancient Script-Like Serpentine in Brown Peridot
Sweet Home Mine Rhodochrosite from 1888
A rhodochrosite on display at AGTA dates back more than a century to Colorado’s Alma Mining District.
Sapphires from Thammannawa, Kataragama Area, Sri Lanka
The February 2012 discovery of high-quality blue sapphires at Thammannawa near Kataragama in southeastern Sri Lanka has intensified gem mining and exploration in the surrounding area and all over the country.
钻石中非同寻常的哑铃状内含物 (英语)
Examination of a 0.40 ct near-colorless round brilliant diamond with a large inclusion resembling a dumbbell
Japanese Jadeite Tables
Letters: Nacken Synthetic Emeralds: Additional Information
Finds from the Secondary Market
Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.
Multi-Generation Cutting Family from Idar-Oberstein
The Cause of Iridescence in Rainbow Andradite from Nara, Japan
“Rainbow” andradite from Nara, Japan, occurs as relatively small orangy brown crystals that show attractive iridescence in almost the entire range of the spectrum.
New Fluorite Deposit in Nigeria
Tairus Hydrothermal Synthetic Sapphires Doped with Nickel and Chromium
Paraíba-Like Synthetic Sapphire
Two flame-fusion synthetic sapphires with a Paraíba-like color are examined at GIA’s Carlsbad lab.
Gemstone Artisan Keycaps
Rare Gadolinite Gemstone
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