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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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Cabochon

This turquoise is cut in a cabochon: the most common shape.

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Robin’s egg

The preferred color for turquoise is a pure sky blue.

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Matrix

Some buyers prefer the presence of matrix in fashioned turquoise.

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Aggregate

Turquoise is an aggregate of microscopic crystals that form a solid mass.

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Copper

The intense blue color in this rough is due to the presence of copper.

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Veins

Veins of matrix in this turquoise are remnants of its surrounding rock.

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Tools

Research

Figure 1. Extremely rare Black Web Gem mine turquoise nuggets and cabochons from Nevada. These pieces are natural with no treatments except for the backings added to the cabochons. The center oval is approximately 16 × 12 mm. Photo by Richard Shull; courtesy of Out of Our Mines.
Out of Our Mines

An impressive variety of American stones, including turquoise and variscite, was offered by Out of Our Mines at the AGTA show.

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Figure 1. “Cleopatra” sterling silver necklace designed by Frank Patania Sr., featuring 99 Morenci turquoise stones. Photo by Robert Weldon; courtesy of Patania Jewelry.
Patania Jewelry

A look at the diverse jewelry designs from four generations of the Patania family.

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Figure 7. Turquoise collected from the Tianhu East mines. Greenish blue (3.11 g) turquoise sample investigated in this research. The matrix consists of quartzite with limonization. Photo by Ling Liu and Qiaoqiao Li.
Mineralogy and Geochemistry of Turquoise from Tianhu East, Xinjiang, China

Examines turquoise from northern China and identifies a geographic origin indicator to distinguish it from other Chinese sources.

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Figure 1. From left: Jacob Lowry, Sean Hyrons, Matthew Wernz, and Kenneth Van Wey engage in a panel discussion titled “Laws: Liabilities and Protections.” Photo courtesy of the Turquoise Museum.
Turquoise United Conference 2023

A recap of the second annual Turquoise United Conference.

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An 84.90 ct sphere of Armenian turquoise measuring 23.70 × 23.88 × 23.91 mm displays a striking resemblance to planet Earth. Left: Diffuse fiber-optic lighting allows the face of the stone to be seen in full. Right: Pinpoint fiber-optic lighting creates an appearance of day and night cast onto Earth. Gifted to GIA’s colored stone reference collection by Gemfab CJSC. Photos by Britni LeCroy.
Turquoise Planet Earth

A sphere of Armenian turquoise with natural brown matrix material mimics planet Earth.

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Figure 1. The appearance of natural high-quality turquoise and porcelain-treated turquoise. Left: Natural high-quality turquoise with various colors (the rightmost bead has a diameter of 10.0 mm). Right: Porcelain-treated turquoise with appearance and colors similar to those of natural high-quality turquoise (the smallest bead measures 6.0 × 5.0 mm). Photos by Liying Huang.
Composition and Spectral Characteristics of Porcelain-Treated Turquoise

Characterizes turquoise treated with an inorganic additive that dramatically improves the luster and color of low- and medium-quality material.

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Figure 1. A look inside Adamas Jewelers in San Dimas, California, operated by Chi Huynh and his brother Kiet. The store carries Galatea’s jewelry and is decorated with Huynh’s wood carvings and paintings, including the boat-style showcases inspired by the family’s journey from Vietnam. Photo by Tao Hsu.
Never Stop Innovating: Gem Artist Chi Huynh

Profiles a groundbreaking gem artist on a quest to bring new concepts, techniques, and products to the industry.

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Turquoise Museum in Albuquerque, New Mexico.
Inaugural Turquoise United Conference

A report on the first-ever Turquoise United conference in Albuquerque, New Mexico.

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Rough turquoise produced in Hubei Province, China.
Gemological Characteristics of Low-Temperature “Gel-Filled” Turquoise

A report on the examination of “gel-filled” turquoise produced in Zhushan County in Hubai Province, China.

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The “Miner’s Fantasy Mine” gem pocket replica highlights various gems and minerals mined in San Diego County.
Hidden Gems at the San Diego Natural History Museum

Each level of the vertical Hidden Gems exhibit offers a different theme at the San Diego Natural History Museum.

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