Spring 2017 - Volume 53, Issue 1
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Wavers with calculated color panels.
Pyrope-Spessartine Color-Change Garnet with a High Grossular Component

A color change in rough garnet is observed and plotted in GIA’s Carlsbad lab.

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Handmade Starship Enterprise
“Boldly Go” with a Southwest-Inspired Starship Enterprise

An eye-catching replica from a cult TV favorite is found in Tucson.

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Rubellite rough.
Tourmaline and Sapphire from Nigeria

An update on Nigerian colored stone production is obtained at the Tucson gem shows.

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Blue and orange sapphires from Rock Creek.
Magnificent Sapphires from Montana’s Rock Creek Mine

A look at the 2016 sapphire production from Montana’s Rock Creek deposit.

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Suite of untreated Ethiopian emeralds
A New Discovery of Emeralds from Ethiopia

A report on a new Ethiopian source of high-quality emerald.

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Fancy Dark red mixed type synthetic diamond.
Mixed-Type Treated Red HPHT Synthetic Diamond

A fancy-color treated synthetic specimen is revealed to be IaA + IaB + Ib types.

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Jewelry Industry Summit

A report from the second Jewelry Industry Summit, held in Tucson, Arizona on January 29–30, 2017.

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Remedios, home of rutilated quartz mining community.
Golden Rutilated Quartz Artisanal Mining Community

Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.

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Amber and plastic reactions to illumination.
Plastic Amber Imitation in a Rosary

Examination reveals both amber and Bakelite plastic beads in a rosary submitted for identification.

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Calcite showing phosphorescence.
Filled Calcite with Pronounced Phosphorescence

A sphere with a greasy luster exhibiting strong phosphorescence is investigated.

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