A 5.5-carat triangular-cut diamond billed as the largest fancy vivid blue-green diamond known to exist sold for $17.3 million ...

"Ocean Dream," the largest blue-green diamond ever recorded, sold for $17 million Wednesday, Christie's auction house said. It was sold for 13.6 million Swiss francs ($17.3 million), a new record for ...

The diamond, known as Ocean Dream, had an estimate of about $9-12 million.

“Natural pink diamonds are formed deep within the earth’s crust, where extreme heat and pressure alter their molecular structure,” said Heritage’s Director of Fine Jewelry, Gina D’Onofrio. “This rare ...

The rare Ocean Dream diamond sold for more than R283 million at auction, while a valuable blue diamond from South Africa’s ...

Ocean Dream,' the largest blue-green diamond ever recorded, sold for $17 million on Wednesday, Christie's auction house said.

When it comes to the world of high jewelry—or haute joaillerie as it’s known—the most rarefied strata of jewelry rise to the top. Similar qualifiers describe fancy green diamonds: incredibly rare, ...

The 5.5-carat triangular-cut gemstone shattered records at Christie’s Geneva, more than doubling its previous auction price.