Most diamonds are made of carbon recycled over and over again between Earth’s surface and its crust. But diamonds with the deepest origins — such as the famed Hope Diamond — are made of carbon from a ...

Experts at a laboratory in Botswana managed by the Gemological Institute of America recently examined an extraordinary ...

What if you could get diamonds from the sky? Green-tech company - skymining - says they're doing just that. By using excess carbon dioxide to make a fully certified diamond, according to inventor Dale ...

The discovery of two diamonds originating from the depths of the Earth's mantle reveals a chemical coexistence that scientists had until now deemed unimaginable. These precious stones, formed ...

Extreme chemical reactions could explain why Earth's middle layer has so much carbon. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The ...

An error has occurred. Please try again. With a The Portland Press Herald subscription, you can gift 5 articles each month. It looks like you do not have any active ...

Imagine an ordinary carbon atom that’s replaced with a tightly packed pyramid of four carbon atoms. Inspired by Egypt’s pyramids, this elegant arrangement has ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A layer of diamonds ...

A groundbreaking discovery has left the scientific community buzzing: a new planet may be covered in diamonds. This celestial body, potentially a treasure trove of sparkling gems, challenges our ...