The 'Ocean Dream,' 5.5-carat fancy vivid blue-green diamond sold for $17.3 million at the Christie's Magnificent Jewels, setting record price for a diamond of its type.

The 'Ocean Dream,' 5.5-carat fancy vivid blue-green diamond sold for $17.3 million at the Christie's Magnificent Jewels, setting record price for a diamond of its type.

Christie's says a 5.5-carat triangular-cut diamond billed as the largest fancy vivid blue-green diamond known to exist has sold for more than 13.5 million Swiss francs or $17.3…

The 5.5-carat "Ocean Dream" diamond was found in Central Africa in the 1990s.

Christie’s called it a record price for a stone of its kind sold at auction.