Sixth Annual Gianmaria Buccellati Foundation Award Winner
A graduate of GIA’s Jewelry Design program in London is the recipient of the 2022 Gianmaria Buccellati Foundation Award.
Sapphire from Montana’s Secondary Deposits, Colombian Emerald Morphology, the 2023 Tucson Shows, and More…
An overview of the Spring 2023 Gems & Gemology content.
Brenda Smith Jewelry Designs
Award-winning jewelry designer Brenda Smith shares some of her creations at the AGTA GemFair in Tucson.
Rare Double Pseudomorph Ikaite-Calcite-Opal
One of the finest specimens of double pseudomorph ikaite-calcite-opal ever unearthed was on display at the Pueblo Gem & Mineral Show.
Enormous Cat’s-Eye Aquamarine
A 586.43 ct cat’s-eye aquamarine is donated to the Smithsonian National Museum of Natural History.
Ethical Supply Chain Practices in Africa with Virtu Gem
A look at Virtu Gem, a company dedicated to improving artisanal mining practices in Africa.
Exceptional Gemstone Acquisitions by the Kreis Family
Stefan and Alexander Kreis share three impressive gemstone acquisitions at GJX in Tucson.
Forsterite in a Purple Tanzanian Spinel
Examination of a purple spinel from Tanzania reveals a rare forsterite inclusion.
YNY Jewels: Designer Surbhi Pandya
Handcrafted jewelry pieces featuring tanzanite carvings stood out at the GJX show.
Zeki Karaca Jewelry: Luxury Pens
One-of-a-kind bejeweled pens from Zeki Karaca caught the attention of attendees at the GJX show.
Ruby with Interesting Synthetic Overgrowth
Microscopic examination of a ruby at the Carlsbad laboratory reveals synthetic overgrowth indicative of high-temperature heat treatment.
Gemological Characterization of Montana Sapphire from the Secondary Deposits at Rock Creek, Missouri River, and Dry Cottonwood Creek
Examines the mining history and geological characteristics of the three secondary sapphire deposits in the state of Montana, as well as the properties of these sapphires (unheated and heat-treated).
“Atypical Beads”: Variations of Two Types of Nuclei
Four atypical bead cultured pearls with variations on two types of nuclei are examined in the Mumbai laboratory.
Color Study of Fancy Sapphire from Greenland
The Bangkok laboratory identifies the chromophores responsible for the fancy colors observed in treated sapphire from Aappaluttoq, Greenland.
Bright Orange Sapphire from Greenland
A transparent bright orange sapphire from Greenland stands out at the AGTA show in Tucson.
HPHT-Grown Colorless Diamond Displaying Unusual Phosphorescence Effects
Study of phosphorescence produced from visible light suggests future difficulty in accurately assessing bodycolor of HPHT-grown diamonds.
A Gastropod Shell in a Unique Shell Blister
GIA’s Mumbai laboratory encounters a unique example of a shell blister encompassing a gastropod shell.
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