Evan M Smith

Senior Research Scientist - Gemological Institute of America

Adjunct Professor - University of British Columbia

Inclusions feel the squeeze

During diamond growth, deep in the mantle, a diamond and any inclusions trapped within it are compressed by the weight of overlying rocks. This ferropericlase inclusion has an incredible remnant "squeeze" factor that tells us the diamond grew at ~600 km deep!

See the article HERE

Highlights

The world's finest gem diamonds are among the deepest samples we have from inside the Earth. Some of these exquisite gems originate hundreds of kilometers down in the mantle and contain information about molten metal, water, and the deep consequences of plate tectonics.

Large gem diamonds from metallic liquid in Earth’s deep mantle

Free through link HERE 

Blue boron-bearing diamonds from Earth’s lower mantle

Free access HERE

The Very Deep Origin of the World’s Biggest Diamonds

Free access HERE

Can we "measure" which country a diamond comes from? 

In this feature article we discuss the challenges surrounding geographic origin determination for diamonds. Voted as the most valuable G&G article of 2022. 

See the article HERE

BBC dives into super-deep diamonds

Thank you to BBC Future for sharing my perspective in this story on "super-deep" diamonds such as the famous Cullinan

Get the latest and most comprehensive resource for diamond research

Snapshots

Discussing mechanisms for uplift of the Colorado Plateau, during a rafting trip down the Grand Canyon

Speaking about enigmatic type II diamonds in the context of exploration, at UBC's MDRU Research Day 2014

Collecting rocks to test for copper and gold, from a skarn deposit targeted for mineral exploration on Vancouver Island