The 10-carat Mediterranean Blue is the expected to fetch as much as $20 million dollars at the Sotheby's sale.

The 10.03-carat Mediterranean Blue gem will be the crown jewel at Sotheby’s High Jewelry Auction this May, on sale (for the first time) alongside a series of other dazzling collectibles.

The British crown jewels are worth even more money than you might imagine. Here's who inherited these treasures, along with Queen Elizabeth II's private jewelry collection. If you’ve ever seen ...

Chip Clark Democratic America has no crown jewels. but we've got the next best ... as we are accustomed to seeing diamonds, but deep blue. It's in a setting designed by Pierre Cartier ...

The 10.03-carat Mediterranean Blue gem will be the crown jewel at Sotheby’s High Jewelry Auction this May, on sale (for the first time) alongside a series of other dazzling collectibles. With its ...