If you've ever held or beheld a diamond, there's a good chance it came from a kimberlite. Over 70% of the world's diamonds are mined from these unique volcanic structures. Yet despite decades of study ...

Diamonds contain evidence of the mantle rocks that helped buoy and grow the ancient supercontinent Gondwana from below, according to new research. These findings demonstrate that superdeep diamonds ...

Diamonds may be symbols of beauty and strength, but their journey to the surface is nothing short of violent. More than 70% of the world’s diamonds are mined from kimberlites — rare volcanic pipes ...

Diamonds hitch a ride to the surface through explosive kimberlite eruptions, powered by volatile-rich magmas. New simulations show that carbon dioxide and water are the secret ingredients that make ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Over 70 percent of the world’s diamonds are mined from kimberlite ...

Boulder, Colo., USA: If you’ve ever held or beheld a diamond, there’s a good chance it came from a kimberlite. Over 70% of the world’s diamonds are mined from these unique volcanic structures. Yet ...

In the twilight of the Cretaceous, 86 million years ago, a volcanic fissure in what is now South Africa rumbled to life. Below the surface, magma from hundreds of miles down shot upward as fast as a ...

Researchers may have found the true origin of the Hope Diamond, the Koh-i-noor and other famous, flawless gemstones. These diamonds, known collectively as the Golconda diamonds, are special because ...