They don’t make them like they used to — at all. It can take natural diamonds over three billion years to grow, but researchers in a South Korean lab have successfully fabricated the precious stones ...

Diamonds in nature famously form under immense pressure in Earth’s mantle. But a new laboratory technique allows diamonds to skip the squeeze. The most common method for producing synthetic diamonds, ...

Diamonds are made out of carbon — highly organized carbon, that is. Geologists are still guessing how diamonds formed in the ...

According to the experts, there is no way for the average person to differentiate a natural from a lab-grown diamond. If you’ve bought a piece of fine jewelry containing a diamond in recent years, you ...

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Very few gems can withstand the intense pressure of Earth's mantle, but some require it to crystallize. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Diamonds form deep within the Earth's mantle, around 250 kilometers below the surface, where immense pressure (up to 10 GPa) and temperatures (around 2,200 °C) compress carbon into diamonds over ...