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$A polished diamond slice with healed fractures and fluid inclusions.$

The Liquids Lurking Inside Your Diamonds

Evan M. Smith, November 11, 2022

Examines the variety of fluid inclusions contained within diamond, which reflect the natural processes that created and modified these gems deep within the earth’s mantle.

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Turquoise Museum in Albuquerque, New Mexico.

Inaugural Turquoise United Conference

Tao Hsu and Aaron Palke, November 11, 2022

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

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Mining gravels at Mugloto pit 3 in the Montepuez Ruby Mining concession.

Update from Mozambique’s Ruby Mines

Wim Vertriest, Sudarat Saeseaw, and Kevin Schumacher, November 11, 2022

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

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Multi-colored quartz from Jiangsu Province, China.

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

Huizhen Huang, Yan Li, and Quanli Chen, November 11, 2022

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

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Three rough and three faceted sapphires from the Baw Mar mine

Letters: More on Orange Luminescence in Corundum

Maxence Vigier and Emmanuel Fritsch, November 11, 2022

Additional scientific details are provided to better understand orange luminescence in sapphire.

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Andrew Cody, one of Australia’s leading opal experts.

In Memoriam: Andrew Cody

GIA Staff, November 11, 2022

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

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Cluster of two quartz crystals weighing 751.95 ct.

Quarterly Crystal: Panasqueira Quartz

John I. Koivula and Nathan Renfro, November 11, 2022

Numerous inclusions are observed in a parallel cluster of two quartz crystals from Minas de Panasqueira in Portugal.

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Dark brown “root amber” beads exhibit light yellow creamy swirls.

Pressed Amber Imitation for “Root Amber”

Shu-Hong Lin, Tsung-Ying Yang, Kai-Yun Huang, and Yu-Shan Chou, November 11, 2022

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

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An orange rutile crystal breaks the surface of a diamond.

Large Orange Rutile Inclusion in a “Chameleon” Diamond

Mike Jollands, November 11, 2022

A partially enclosed orange rutile crystal is observed on the crown of a faceted diamond.

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This Paraíba tourmaline contains a set of stellate zircon needles.

Stellate Zircon in a Paraíba Tourmaline

Nicole Ahline, November 11, 2022

Fiber-optic light reveals a remarkable set of stellate inclusions in blue-green Paraíba tourmaline.

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