A remarkable collection of fancy colour diamonds is on display at the Smithsonian’s National Museum of Natural History after a generous donation.

The Graff Pink Diamond ring was purchased for a jaw-dropping USD 46.16 million ... It was originally a beautiful and rare 24.78-carat diamond that was owned by New York jeweller Harry Winston. When ...

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 ...