Fall 2016 - Volume 52, Issue 3
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Stoned: Jewelry, Obsession, and How Desire Shapes the World
Book Review: Stoned: Jewelry, Obsession, and How Desire Shapes the World

Review of Stoned: Jewelry, Obsession, and How Desire Shapes the World by Aja Raden

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Jadeites impregnated with an exoxy
Application of the DiamondView in Separating Impregnated Jadeite

Testing reveals the usefulness of DiamondView imaging in detecting impregnated jadeite.

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Pink sapphire mining pit at Kibuko, Tanzania
Update on Colored Gemstone Mining in Tanzania

Reports on an expedition to many known and new Tanzanian gem localities.

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59.88 ct Fancy Vivid yellow irradiated diamond
Very Large Artificially Irradiated Yellow Diamond

Examination of a 59.88 ct irradiated yellow diamond, one of the largest irradiated diamonds identified by GIA.

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4.29 ct color-treated Fancy brown-pink diamond
Treated Pink Type IIa Diamond Colored by Red Luminescence

A type IIa color-treated diamond was graded as Fancy brown-pink under daylight conditions and Fancy purplish gray under incandescent lighting, a color change that resulted from HPHT annealing and irradiation.

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DiamondView image of pink diamond showing two pink spots near the edge of the table facet
Evidence of Focused Beam Irradiation in Treated Pink Diamond

DiamondView imaging and photoluminescence spectroscopy offered evidence of focused beam irradiation in a pink diamond.

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Aquamarine from San Luis Potosí State in northern Mexico
Aquamarine from a New Primary Deposit in Mexico

Examination of aquamarine samples from a new primary deposit in San Luis Potosí, northern Mexico.

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Faceted blue zircons
Reversible Color Modification of Blue Zircon by Long-Wave Ultraviolet Radiation

Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original color through the use of incandescent light.

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A 0.11 ct faceted grandidierite from Madagascar
A New Deposit of Gem-Quality Grandidierite in Madagascar

Reviews the properties of exceptionally pure grandidierite from a new source.

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Amethyst with a large aqueous primary fluid inclusion
Large Aqueous Primary Fluid Inclusion in Amethyst

A strikingly large primary fluid inclusion with a gas bubble was seen in a Moroccan amethyst.

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