Diamonds are no longer just prized for their brilliance. In cutting-edge physics labs, synthetic diamonds with carefully ...

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, ...

For centuries, diamond has been the reigning champion of hardness on Earth. However, a recent breakthrough in material science has led to the synthesis of a new substance, predicted to be 50 percent ...