This is an archive of AGU's GeoSpace blog through 1 July 2020. New content about AGU research can be found on Eos and the AGU newsroom.

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16 January 2019

New study quantifies deep reaction behind “superdeep” diamonds

By Joshua Rapp Learn Whether they are found in an engagement ring or an antique necklace, diamonds usually generate quick reactions from their recipients. Now, new research shows deep inside the Earth, fast reactions between subducted tectonic plates and the mantle at specific depths may be responsible for generating the most valuable diamonds. The diamonds mined most often around the world are formed in the Earth’s mantle at depths of …


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12 October 2012

On the early lives of diamonds

Diamonds may not be forever, but they do last an incredibly long time. The forces in the Earth’s interior that shape these famously durable gems have long been mysterious. A new study looks at teensy chunks of an inner zone of the planet that can get caught within diamonds’ crystal structures. It presents new evidence that diamonds often take a long ride in the planet’s fluidly moving gut before rising to the surface.


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