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Diamonds show Earth still capable of ‘superhot’ surprises

Diamonds may be 'forever' but some may have formed more recently than geologists thought. A study of 26 diamonds, formed under extreme melting conditions...

‘Super-deep’ diamonds may hold new information about Earth’s interior

Researchers at Tohoku University believe that it is possible for natural diamonds to form at the base of the Earth's mantle (Fig.1). The formation...

Deep mantle chemistry surprise: Carbon content not uniform

Even though carbon is one of the most-abundant elements on Earth, it is actually very difficult to determine how much of it exists below...

The case of the missing diamonds

It all began innocently enough. Tyrone Daulton, a physicist with the Institute for Materials Science and Engineering at Washington University in St. Louis, was...

Biggest and best diamonds formed in deep mantle metallic liquid

New research from a team including Carnegie's Steven Shirey and Jianhua Wang explains how the world's biggest and most-valuable diamonds formed—from metallic liquid deep...

“Argyle Pink Jubilee” Largest Pink Diamond in Australia

An Australian mining company says it has found a 12.76-carat pink diamond, the largest rough pink diamond found in the country. The rare diamond was...

Blue Diamond ‘Worth 10 Millions’ Discovered

A massive diamond with a possible price tag of more than £36m has been discovered at a mine in South Africa. The 29.6 carat blue...

Diamond collection brings deep Earth to the surface

Researchers at the Denver Museum of Nature & Science and University of British Columbia recently analyzed diamonds from the Museum's collection and learned how...

Diamonds help generate new record for static pressures for study

Extraordinary things happen to ordinary materials when they are subjected to very high pressure and temperature. Sodium, a conductive metal in normal conditions, becomes...

Some islands started in diamond-bearing regions under continents, geochemists say

The raw materials of some volcanic islands are shaped by some of the same processes that form diamonds deep under the continents, according to...

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