Research Article Search Results

Large “Rainbow Calcite”

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New Deposit of Pezzottaite from Madagascar

A highly saturated purplish pink to red pezzottaite from a new deposit in Madagascar is encountered in Tucson and tested by GIA researchers.

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New Fluorite Deposit in Nigeria

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New Nigerian Green Beryl Find

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Zircon Cluster in Ethiopian Sapphire

The presence of these zircon clusters might help separate Ethiopian sapphire from other basalt-related sources.

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William Ruser: The Jeweler Who Charmed Hollywood

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Large CVD-Grown Diamond Resubmitted after HPHT Treatment

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Electroformed Gold Bracelet

Examination of gold bracelet bearing a 14K hallmark reveals a wax or resin material under gold plating.

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Exceptionally Rare Titanoholtite

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Iridescent Imitation Pearl

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Pink and Red Epidote in Quartz

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Quarterly Crystal: Diamond in Diamond

Examination of a South African diamond reveals an eye-visible diamond inclusion.

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