Natural Blister From Entombment Of A Pearlfish Within A Pinctada Maxima Shell
A blister in a P. maxima shell, formed when the mollusk's nacre covered a trapped pearlfish, preserves the fish in stunning detail.
Dendritic Inclusions in Cambodian Sapphire
A sapphire from Pailin, Cambodia, hosts inclusions that are unusual for this material.
Omphacite and Chromite: A "Bimineralic Inclusion" in Diamond
Two inclusions appear joined in a diamond host.
Opal from West Java, Indonesia
At the AGTA show, Rare Earth Mining Co. (Trumbull, Connecticut) displayed an unexpected material: Indonesian opal reportedly from West Java.
Update on Russian Demantoid Production
Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.
Very Small Akoya Cultured Pearls
A selection of very small akoya cultured specimens demonstrates the challenges gemologists face when determining pearl origin.
Update from the Responsible Jewellery Council (英语)
The Responsible Jewellery Council (RJC) has announced plans to include colored stones and silver in the next revision cycle for its Code of Practices, which RJC members are certified against.
Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design
The first annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design was presented to GIA graduate Catherine Zheng.
Aquamarine from Pakistan
A gemological investigation of the aquamarine that has emerged from northern Pakistan in recent years.
Interview with a Kenyan Miner and Dealer
Miriam Kamau, owner of Mimo Gems Traders Ltd. in Nairobi, transformed from an office assistant to a dealer and miner to a representative of her country on the international stage of the colored gemstone trade.
Ponderosa Sunstone Update
John Woodmark provides an update on the Ponderosa sunstone mine in Oregon.
Turquoise from Western Arkansas
A report on turquoise from the only known U.S. deposit outside of the Southwest.
Outlook on Opals from Mexico and Australia (英语)
Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.
Colombian Emerald Industry: The New Generation
Luis Gabriel Angarita and Edwin Molina share their experiences and perspective on the Colombian emerald industry.
Update on the Green Dragon Demantoid Mine in Namibia
Stephan Reif explains the mine-to-market approach at the largest continuously operating demantoid deposit.
Cultured Pearl Update
Fran Mastoloni shares his thoughts on the status of the cultured pearl market.
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