Move over Hope Diamond! The Dom Pedro obelisk, a Beryl variety aquamarine, is in the house. Donald E. Hurlbert, National Museum of Natural History Vinophiles like to repeat the fanciful Galileo ...

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 ...

The Hope Diamond has a long and colorful history. It is not, as museumgoers sometimes assume, the largest diamond in the world.

The 2.33-carat Winston Red Diamond, one of the finest fancy red diamonds in the world Photo by Robert Weldon, courtesy of Ronald Winston The Smithsonian’s National Museum of Natural History has ...

Christie's is getting ready to present The Golconda Blue, the largest Fancy Vivid Blue Diamond ever to be offered at auction. Weighing 23.24 carats, this gemstone will headline Christie's ...

The diamond was unearthed using new technology, and miners hope it will bring back luster to a struggling industry.

The Hope Diamond is truly exceptional. But thanks to modern mining and X-ray technology, more big diamonds are being found. There are some huge finds just from recent decades.

A historic blue diamond once worn by Indian royalty is expected to fetch between $35m and $50m when it goes under the hammer in May. The 23.24-carat gem, known as the Golconda Blue, is set to lead ...

This finding involves diamonds, but we're not talking about something the size of the Hope Diamond. The largest lonsdaleite crystals they have discovered are a micron in size, McCulloch said.