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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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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In Memoriam: Andrew Cody

The life of one of Australia’s leading opal authorities is remembered.

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Inaugural Turquoise United Conference

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

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Pressed Amber Imitation for “Root Amber”

An examination of a beaded bracelet reveals calcite powder to enhance the imitation of natural root amber.

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Synthetic Sapphire with Rose Channels

Rose channels and twinning planes are observed in light purplish blue synthetic corundum.

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The Year of Mineralogy at the Perot Museum

The Perot Museum of Nature and Science promotes public interest in mineral studies with The Year of Mineralogy exhibit.

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Update from Mozambique’s Ruby Mines

A field gemology team from GIA provides an update on the ruby mining operations around Montepuez.

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Ahmadjan Abduriyim Receives JAMS Award for Applied Mineralogy

Ahmadjan Abduriyim receives 2021 JAMS award for his contributions to applied mineralogy.

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Atypical “Box Bead” Cultured Pearls

GIA’s Bangkok laboratory examines five “box bead” cultured pearls with nuclei fashioned from saltwater shell.

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A Type of Multi-Colored Quartz with Oriented Inclusions, Reportedly from Brazil

A study of a special quartz known in the Chinese trade as “Auralite 23.”

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