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

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, ...

ABC News is taking a look at solutions for issues related to climate change and the environment with the series "The Power of Us: People, The Climate, and Our Future." The natural diamond industry has ...