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

From sparkling multi-million-dollar diamonds to custom designs, here are the most expensive diamond rings in the world that redefines luxury.

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 ...

Some rings do more than symbolize commitment—they reshape the market. When Jennifer Lopez flashed her pink Harry Winston ...

From brilliant blues to fiery reds, discover how nature crafts diamonds in every color, and why some shades are rarer than ...