• About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
  • About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos
Skip to content
  • AGU.org
  • Career Center
  • Join AGU
  • Give to AGU
Eos

Eos

Science News by AGU

Support Eos
Sign Up for Newsletter
  • About
  • Sections
  • Topics
    • Climate
    • Earth Science
    • Oceans
    • Space & Planets
    • Health & Ecosystems
    • Culture & Policy
    • Education & Careers
    • Opinions
  • Projects
    • ENGAGE
    • Editors’ Highlights
    • Editors’ Vox
    • Eos en Español
    • Eos 简体中文版
    • Print Archive
  • Blogs
    • Research & Developments
    • The Landslide Blog
  • Newsletter
  • Submit to Eos

diamonds

Diagram from the study
Posted inEditors' Highlights

Piecing Together the Roots of the Ancient Australian Continent

by Paul Asimow 25 October 202326 October 2023

Mineral compositions from numerous volcanic rocks that sample the mantle keel beneath Western Australia’s Kimberley Craton reveal the temperature and mineralogy that explain its long-lived stability.

An overhead view of Argyle diamond mine in Western Australia
Posted inNews

Continental Breakup Shot Pink Diamonds to Earth’s Surface

by J. Besl 23 October 202323 October 2023

What was once the world’s most prolific pink diamond mine has always been an anomaly. New research suggests that the end of an ancient supercontinent helped rocket its precious gems to the surface.

This snapshot of a new global mantle convection model depicts Earth 180 million years ago, with broad mantle upwellings (in copper) equal to or greater than 1 kelvin meter per year, reconstructed continental blocks (gray polygons), and kimberlite eruptions (magenta columns).
Posted inNews

How to Find a Volcanic Diamond Mine

by Rebecca Owen 30 June 202330 June 2023

New 3D modeling illustrates the mechanism behind the intriguing volcanic eruptions that bring diamonds to the surface.

Monash University Professor Andrew Tomkins (left) and Royal Melbourne Institute of Technology (RMIT) Ph.D. scholar Alan Salek examine a ureilite meteorite sample at the RMIT Microscopy and Microanalysis Facility.
Posted inNews

Rare Meteorites Shed Light on Diamond Formation

Katherine Kornei, Science Writer by Katherine Kornei 18 October 202218 October 2022

By studying meteorites believed to be remnants of the catastrophic breakup of a dwarf planet, researchers are learning how lonsdaleite, a particularly hard type of diamond, forms in nature.

Image of the diamond from Botswana containing davemaoite as an inclusion
Posted inNews

Diamond Discovery Unearths Secrets of the Deep

by Clarissa Wright 23 December 202130 September 2023

A diamond inclusion has revealed a new mineral, davemaoite, as well as hints about the workings of our planet’s interior.

Wearing a white lab coat, Yiming Zhang, a doctoral student at the University of California, Berkeley, sits in front of a computer screen, examining data, with a mouse in his right hand. To his left, a gray microscope with four copper-colored rings encircling the stage perches on a black table.
Posted inNews

Diamonds Are a Paleomagnetist’s Best Friend

by Alka Tripathy-Lang 19 October 202114 March 2023

Typical paleomagnetic measurements average a sample’s signal. The quantum diamond microscope helps scientists make micrometer-scale maps of magnetism, showing where a sample locked in its magnetic signatures.

Figure showing a thermal model of a subduction zone with the relatively cold (blue) oceanic plate sinking into the comparatively hot (red) mantle.
Posted inEditors' Highlights

Diamonds Are at Fault

by V. Salters 26 May 202122 September 2022

Deep-seated earthquakes in subduction zones are related to diamond formation.

The rough Cullinan Diamond
Posted inResearch Spotlights

Explaining the Genesis of Superdeep Diamonds

by Terri Cook 12 March 201923 December 2021

Real-time tracking during diamond anvil cell experiments indicates reaction rates may control the unusual depth distribution of the extremely rare diamonds that form deep within Earth’s mantle.

Posted inEditors' Highlights

Are Diamonds Ubiquitous Beneath Old Stable Continents?

by Sergei Lebedev 7 August 20182 March 2023

Although rare at the Earth’s surface, diamonds may be commonplace at depths of 120 to 150 kilometers below the surface within the lithosphere of old continents.

A rough, uncut diamond sitting in kimberlite rock.
Posted inNews

Diamond Impurities Reveal Water Deep Within the Mantle

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 2 April 20184 August 2023

A high-pressure form of ice, trapped within diamonds forged in the lower mantle, suggests that aqueous fluids reside deeper in Earth than we knew.

Posts pagination

1 2 Older posts
A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

Features from AGU Publications

Research Spotlights

Deforestation Is Reducing Rainfall in the Amazon

19 May 202519 May 2025
Editors' Highlights

Bringing Storms into Focus

19 May 202515 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
Eos logo at left; AGU logo at right

About Eos
ENGAGE
Awards
Contact

Advertise
Submit
Career Center
Sitemap

© 2025 American Geophysical Union. All rights reserved Powered by Newspack