A mysterious black diamond stumped experts for years until one Belgian cutter invented a new machine to shape the 612-carat ...

Queen Elizabeth owned a dazzling brooch cut from the world’s largest diamond. The Cullinan III and IV brooch has an estimated worth of between £50 and £180 million. Elizabeth inherited the diamonds ...

Weighing over 130 carats, the yellow Florentine is among the world’s most valuable diamonds—but for the last 100 years, its ...

With the collapse of the Austro-Hungarian Empire in 1918 and the exile of Emperor Charles I, the Florentine vanished from ...

Nothing says love like a diamond, especially a stunning blue diamond that's now up for auction. Feast your eyes on the largest flawless vivid blue diamond in the world. Weighing 13.22 carats, the ...