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Diamonds Under the Scope

Sharon Bohannon, April 11, 2016

Peer through a microscope and discover another world of gems. Inclusions reveal the gem’s journey from deep within the earth to its surface.

Multi-colored gems are superimposed on an image of glacier peaks.

Article

Gems and Minerals from the Subarctic

Sharon Bohannon, March 17, 2017

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

U-Pb Ages of Zircon Inclusions in Sapphires from Ratnapura and Balangoda (Sri Lanka) and Implications for Geographic Origin

Emilie Elmaleh, Susanne Theodora Schmidt, Stefanos Karampelas, Klemens Link, Lore Kiefert, Annette Süssenberger, and André Paul, May 15, 2019

Establishes a metamorphic origin for sapphire samples from these deposits, supported by their trace-element composition and inclusion characterization, including the age dating of zircon inclusions.

Large rough beryl crystal containing multiphase inclusions.

“Double Bubble” Multiphase Inclusion in Beryl

Hollie McBride, May 15, 2019

A “double bubble” of gas within gas appears in a 64.10 ct pale green rough beryl at room temperature.

Trapiche-like structure in this Kashmir ruby consists of colorless feldspar crystals, black graphite platelets, and rutile crystals.

Trapiche-Like Ruby from the Batakundi Mine, Kashmir

Patcharee Wongrawang, May 15, 2019

Trapiche-like ruby from Kashmir shows a well-formed fixed six-rayed pattern.

A guest crystal in the star sapphire viewed under cross-polarized light (left) and fiber-optic light (right).

Sapphire Inclusion with Rutile “Silk” in a Burmese Star Sapphire

Xiaodan Jia and Mei Mei Sit, May 15, 2019

Illumination techniques reveal a remarkable sapphire inclusion within a Burmese star sapphire.

Polished free-form opal encapsulating an insect.

Fossil Insect in Opal

Tyler Smith and Nathan Renfro, May 15, 2019

Precious opal hosts a trapped insect.

Lath-like grandidierite mineral inclusion in sapphire.

Grandidierite Inclusions in Sapphires

Maxwell Hain and E. Billie Hughes, May 15, 2019

Grandidierite, an unusual inclusion in sapphire, independently encountered by two laboratories.

Bright yellow inclusions inside barite crystals.

Quarterly Crystal: Orpiment in Barite

John I. Koivula, May 15, 2019

Barite cluster from Nevada hosts numerous yellow orpiment crystal inclusions.

Native copper inclusions in purple chalcedony.

Native Copper Inclusions in Indonesian Purple Chalcedony

Nathan Renfro and Stephen Challener, May 15, 2019

Indonesian purple chalcedony containing interesting native copper inclusions is a first for the Carlsbad lab.

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