Are we standing on a quadrillion tons of diamonds?
   

Reactions Science Videos | September 1, 2021

There might be a quadrillion tons of diamonds 100 miles below Earth’s surface. But the farthest we’ve traveled is 7 miles down, so how could we know that?

Sources:
Multidisciplinary Constraints on the Abundance of Diamond and Eclogite in the Cratonic Lithosphere

Diamondiferous garnet harzburgites from the Finsch kimberlite, Northern Cape, South Africa

Earthquakes and the Earth's internal structure

Understanding Earth’s interior

How we know what lies at Earth’s core

Diamonds Unearthed

Seismic waves

Most diamonds share a common origin story

Metastability of diamond ramp-compressed to 2 terapascals

Rare Diamond Confirms That Earth's Mantle Holds an Ocean's Worth of Water

Diamonds show depth extent of Earth's carbon cycle

A quadrillion tons of diamonds lurk deep within Earth

Hope diamond formed stunningly close to Earth's core

Earth’s layers

Produced by the American Chemical Society.

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