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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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Turquoise from Western Arkansas
A report on turquoise from the only known U.S. deposit outside of the Southwest.
Golden Rutilated Quartz Artisanal Mining Community
Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.
“Boldly Go” with a Southwest-Inspired Starship Enterprise
An eye-catching replica from a cult TV favorite is found in Tucson.
Impregnated and Dyed Turquoise
Natural turquoise has been subjected to dyeing and three types of impregnation.
Turquoise with Fingerprint Pattern
A fingerprint pattern, possibly left by human skin oils during the assembly process, is observed in natural turquoise beads.
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
This section, from the Summer 2009 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
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
This section, from the Summer 1986 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
A Survey of the Gemstone Resources of China
China has identified many deposits with significant potential to produce gemstones; various species are discussed.
Turquoise Quality Factors
Typically, turquoise is judged on three basic quality factors: color, texture and the presence or absence of matrix. Learn more about turquoise and what makes this gem so sought after!
Turquoise Description
Turquoise might lack the sparkle and clarity of transparent colored gemstones like ruby, emerald, and sapphire, but its multi-layered history and soul-satisfying color make it a desirable gem. Its color can range from dull greens to grass greens to a bright, medium-toned, sky blue
