Intarsia Jewelry Box by Nicolai Medvedev and Susan Helmich
Gold Granulation by Zaffiro
Blue Opal from Chile
Beryl from Newfoundland, Canada
Beryl and emerald specimens from a recent discovery in Newfoundland are examined at GIA.
Guatemalan Jadeite Jade: Rough and Finished
Mineralogy and Geochemistry of Turquoise from Tianhu East, Xinjiang, China
Examines turquoise from northern China and identifies a geographic origin indicator to distinguish it from other Chinese sources.
Beyond Beauty: A Garnet Necklace Decoded
Historical Relics Repurposed into Jewelry
Several jewelry designs incorporated historical artifacts at the Tucson gem shows.
“Ice Jade” from Guatemala
Characterizes a translucent variety of jadeite jade from the Morales mine in Guatemala.
An Exceptional Cat’s-Eye Emerald
Morganite from Blue Star Gems
An extraordinary 236.27 ct morganite from Madagascar stands out at the GJX show.
The Lengthy Vertical Journey of Superdeep Diamonds
Explores the journey of superdeep diamonds to the earth’s surface.
New High-Quality Rainbow Moonstone from Madagascar
A new type of transparent moonstone seen in Tucson displays a distinct orange flash effect.
Seventh Annual Gianmaria Buccellati Foundation Award Winner
A graduate of GIA’s Jewelry Design program in Taiwan is the recipient of the 2023 Gianmaria Buccellati Foundation Award.
Nanoscale Techniques for Characterizing Gemstone Coatings: A Case Study on Synthetic Moissanite
Provides a basis for analyzing colored coatings on a variety of polished gemstones.
Brazilian Watermelon Tourmaline with Iris Effect
A pair of watermelon tourmaline slices from the Cruzeiro mine displays a rainbow of colors.
CVD with “Ancient Text” Clouds
A CVD-grown diamond exhibits an interesting clarity characteristic.
G&G Features in a Flash: Texas Topaz
Learn about Texas topaz history and geographic origin research.
New and Notable Finds from the GIA Lab: Winter 2023
Discover a bicolor chameleon diamond, a diamond with carbon dioxide, and a pink square inside a diamond.
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