A Sri Lankan star sapphire delights with an apatite crystal floating over a cloud of rutile silk.
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Reports on the geology, background, and current state of mining and production at Iran’s largest turquoise mine.
Read MoreA selection of 74 non-bead cultured and 12 bead cultured pearls grown in cultured pearl sacs and harvested directly from operated mollusks were collected and their internal structures examined using real-time microradiography and X-ray computed microtomography analyses.
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The GIA Library and Museum launch a Facebook group to encourage lively discussion among bibliophiles, museum curators, and gem enthusiasts.
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A “strawberry quartz” bangle is identified as pink aventurine quartz with alurgite inclusions.
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Distinguished research fellow Dr. James Shigley receives the Robert M. Shipley Award for his contribution to the science of gemology.
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The Tokyo lab examined a stunning double cat’s-eye emerald whose chatoyancy was created both by its cut and its inclusions.
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A study on violet, iron-dominated blue, and cobalt-dominated blue spinel from different localities examines spectroscopic characteristics after undergoing heat treatment.
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Laboratoire Français de Gemmologie (LFG) receives several assembled cultured blister samples from Mayotte for gemological characterization.
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Fura Gems offers Mozambican ruby to the trade for the first time as the industry faces supply chain disruptions due to COVID-19.
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past gems & gemology issues
Winter 2024
Volume 60, Issue 4
Fall 2024
Volume 60, Issue 3
Summer 2024
Volume 60, Issue 2
Spring 2024
Volume 60, Issue 1
Winter 2023
Volume 59, Issue 4
