Spring 2024 G&G Publication Information

This document provides the publication information for Gems & Gemology

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Butterfly Brooch Showcasing East African Gems

A brooch adorned with 49 East African Gems was on display at the AGTA show.

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Cummingtonite Needles Encased by Quartz in a Rhodonite

An observed inclusion association pattern may provide a new perspective on the origin of curved inclusions in rhodonite.

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Challenges in Identifying Drilled Keshi Pearls

GIA’s Mumbai laboratory studies a lot consisting of 40 pearls to aid in distinguishing natural from non-bead cultured pearls.

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Green Amber from Ethiopia

Rare green amber from the Amhara region of Ethiopia was available at the Pueblo Gem & Mineral Show.

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Identification of Chromium-Bearing Red Gemstones Using Photoluminescence: A Red Musgravite Case Study

An investigation using PL spectroscopy to identify chromium-bearing red gemstones.

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Montana Sapphire at Obsessed Over Gems

Obsessed Over Gems offered an array of unheated Montana sapphires in a range of hues, cuts, and sizes at the AGTA show.

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New Sapphire Material from Kashmir

A look at newly found Kashmir sapphire exhibited at the AGTA show.

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“Lily Pad” Structure in an Orangy Yellow Pearl

An orangy yellow pearl featuring a unique acicular feature is examined at the Mumbai laboratory.

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Natural Orange Diamond with Unusual Absorption Features

Two diamonds analyzed in the New York laboratory lead to a newly identified cause of orange color.

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Vaterite in Freshwater Natural Shell Blister

A baroque-shaped shell blister is examined at the Mumbai laboratory.

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“Cyber” Butterfly

Examination of a purple sapphire reveals a zigzag-patterned fingerprint and negative crystal resembling a butterfly.

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Fluorite in Brazilian Alexandrite

An octahedral fluorite crystal is observed in Brazilian alexandrite.

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Hairlike Inclusions in Benitoite

Whitish hairlike inclusions are present throughout a 3.55 ct benitoite.

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Iridescent Healed Fissures in Epidote

Illumination under the microscope reveals iridescent healed fissures in a yellowish brown epidote.

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Parasite Channels in a Saltwater Natural Pearl

A Y-shaped channel with finer branches indicates parasitic activity in a natural saltwater pearl.

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Radial Limonite in Sapphire

Radial limonite displays bright interference colors in a surface-reaching fracture of a violet sapphire.

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Shrinkage Cracks in Fire Agate

Fire agate from Mexico displays a random weblike pattern.

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Stellate Cloud in Diamond

Patchy cloud in a diamond resembles a celestial star.

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Tourmaline Inclusion with Included Crystals in Kashmir Sapphire

A tourmaline inclusion in a Kashmir sapphire contains “daughter” crystal inclusions.

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