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Turquoise
Azure sky, robin’s egg blue: Vivid shades of turquoise define the color that’s named after this gem.
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Research
Turquoise from Western Arkansas
A report on turquoise from the only known U.S. deposit outside of the Southwest.
“Boldly Go” with a Southwest-Inspired Starship Enterprise
Golden Rutilated Quartz Artisanal Mining Community
Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.
Impregnated and Dyed Turquoise
Natural turquoise has been subjected to dyeing and three types of impregnation.
Turquoise with Fingerprint Pattern
Turquoise from Zhushan County, Hubei Province, China
A relatively new source of gem-quality turquoise is hosted within slates in Zhushan County of China’s Hubei Province.
Summer 2009 G&G Lab Notes
The Identification of Zachery-Treated Turquoise
Over the last 10 years, millions of carats of turquoise have been enhanced by a proprietary process called the Zachery treatment.
Summer 1986 G&G Lab Notes
A Survey of the Gemstone Resources of China
Turquoise Planet Earth
Polymer-Impregnated Turquoise
A large “Persian” turquoise cabochon was impregnated with a material that was also present in cavities on its base.
