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Figure 1. Dark yellowish to brownish green needle-like inclusions dominate the interior of this 21.36 ct Portuguese fluorapatite on siderite matrix. Photo by Adriana Robinson.

Quarterly Crystal: Dravite in Fluorapatite

John I. Koivula, Nathan Renfro, and Maxwell Hain, November 3, 2023

Acicular inclusions are identified as dravite tourmaline in a fluorapatite host.

Figure 1. From left: Jacob Lowry, Sean Hyrons, Matthew Wernz, and Kenneth Van Wey engage in a panel discussion titled “Laws: Liabilities and Protections.” Photo courtesy of the Turquoise Museum.

Turquoise United Conference 2023

Alex Goodsuhm and Aaron Palke, November 3, 2023

A recap of the second annual Turquoise United Conference.

An 84.90 ct sphere of Armenian turquoise measuring 23.70 × 23.88 × 23.91 mm displays a striking resemblance to planet Earth. Left: Diffuse fiber-optic lighting allows the face of the stone to be seen in full. Right: Pinpoint fiber-optic lighting creates an appearance of day and night cast onto Earth. Gifted to GIA’s colored stone reference collection by Gemfab CJSC. Photos by Britni LeCroy.

Turquoise Planet Earth

Britni LeCroy, November 3, 2023

A sphere of Armenian turquoise with natural brown matrix material mimics planet Earth.

Figure 1. Pauline Mundia, Susan Wheeler, Eric Braunwart, and Ola Erogbogbo-Oyeniyi discuss working with gem traders in source countries. Photo courtesy of RJT.

Chicago Responsible Jewelry Conference

Erin Hogarth, November 3, 2023

A report on the seventh annual Chicago Responsible Jewelry Conference.

Prismatic black tourmaline in a Zambian emerald. Photomicrograph by Virginia Schneider; field of view 1.76 mm.

Tourmaline in Emerald

Virginia Schneider, November 3, 2023

Examination of a Zambian emerald reveals prismatic black tourmaline inclusions.

Figure 1. A look inside the new Gübelin Gem Museum in Lucerne, Switzerland. Photo courtesy of Gübelin.

Gübelin Gem Museum Opens in Switzerland

Erica Zaidman, November 3, 2023

A look at the new Gübelin Gem Museum in Lucerne, Switzerland.

Stellate dislocations decorate the interior of a greenish blue spinel believed to be from Vietnam. Photomicrograph by Ezgi Kiyak; field of view 4.79 mm.

Large Stellate Dislocation in Spinel

Ezgi Kiyak, November 3, 2023

A greenish blue spinel displays a large network of needle-like dislocations clustered in a six-rayed star pattern.

$Figure 1. An 8.57 ct heart-shaped fracture-filled ruby treated with a zinc glass filling. Photo by Adriana Robinson.$

Translucent Ruby Filled with Zinc Glass

Shiva Sohrabi and Amy Cooper, November 3, 2023

Examination of a heart-shaped ruby reveals a zinc glass filler.

A precipitation of an unidentified mineral in a fissure of a purple spinel creates this highly intricate moiré pattern. A combination of oblique fiber-optic and darkfield illumination was used. Photomicrograph by Tyler Smith; field of view 2.90 mm.

Fissure with Moiré Pattern in Spinel

Tyler Smith, November 3, 2023

A precipitation of an unidentified mineral creates a complex moiré pattern in a fissure of a purple spinel.

Akshay Poddar, Melizza and Jennifer Tanpoco, and Julia Hackman Chafé are some of GIA’s featured graduates on the Alumni Collective website.

GIA Alumni Collective

GIA Staff, November 3, 2023

The Alumni Collective celebrates GIA alums who uphold GIA’s highest standards.

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