Christie’s is getting ready to present The Golconda Blue, the largest Fancy Vivid Blue Diamond ever to be offered at auction.

On its way to auction at Sotheby’s Geneva, the 10-carat diamond stopped off at the Bassam Freiha Art Foundation in Abu Dhabi. CNN got up close and personal with the rare blue gem and the rest of the ...

The diamond is the birthstone for April. Need a break? Play the USA TODAY Daily Crossword Puzzle. While this gemstone is well-known for its colorless or white variety, there are colored diamonds ...

The Golconda Blue,' a 23.24-carat historic diamond, once owned by Indian royalty, is set to debut at Christie's 'Magnificent ...