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

Pink diamonds are some of the rarest gems you'll find on the planet. In fact, these diamonds are so rare that a single mine in Australia has been the source of almost 90 percent of the colored ...

This photograph taken Feb. 6, 2024 shows a laboratory technician monitoring the progress of lab-grown diamond seeds at Greenlab Diamonds manufacturing firm on the outskirts of Surat. (Sam Panthaky/AFP ...

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 ...