Observations of Oval-, Pear-, and Marquise-Shaped Diamonds: Implications for Fancy Cut Grading

Presents findings from observations of oval-, pear-, and marquise-shaped diamonds, laying the groundwork for a fancy cut grading system.

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Generative Artificial Intelligence as a Tool for Jewelry Design

Evaluates the use of generative AI programs in jewelry design and addresses the related ethical, legal, and regulatory challenges.

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Amethyst from Newfoundland, Canada: Geology, Internal Features, and Fluid Inclusion Microthermometry

Characterizes gem-quality amethyst from the La Manche deposit in the Avalon Zone of Newfoundland, Canada.

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Classification of Gem Materials Using Machine Learning

Explores the application of several machine learning models to complement traditional gem classification approaches.

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Scenes from 90 Years of Gems & Gemology

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“Rose” Quartz

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Rare Musgravite Crystal in Green Sapphire

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Interesting Metallic Platelets in Morganite

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Fireworks Display in Russian Emerald

The inclusion scene in a Russian emerald resembles fireworks illuminating a night sky.

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Ruby with Synthetic Overgrowth Lining Cavities

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Gemfields Emerald and Ruby Auctions

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Arzakite Inclusion in Ruby from Mogok

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Almandine Garnet from Phu Tho, Vietnam

Reports on the study of garnet samples from a source in northern Vietnam.

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Gems & Gemology at Ninety: A Look to the Future

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The Extraordinary Backstory of Natural Diamonds: A Diamond Is (and Has Been) Forever

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Irradiated HPHT-Grown Diamonds with Blue-Green Color Zonation

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Green Haüyne

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Colored Bands in CVD-Grown Diamond

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Splendors from the Deep: Historic Treasures from a Spanish Shipwreck

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Zoned Trapiche Emerald with Goshenite Overgrowth

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