Blue-green diamond called the "world's rarest" sells for record $17.3 million at auction

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’ blue-green diamond sells for more than $17 million at Christie’s auction in Geneva

Christie's says a 5.5-carat triangular-cut diamond billed as the largest fancy vivid blue-green diamond known to exist has ...

Largest Fancy Blue Diamond Offered At Auction Could Fetch $8.5 Million

The Azure Blue is one of two important blue diamonds being offered at Christie’s. The second is a 5.04-carat fancy vivid blue ...

$12 Million Vivid Blue Diamond Fails To Sell At Sotheby’s Geneva

Despite the setback, the Sotheby's sale totaled more than $30 million, with 93% of lots sold. It was the highest ...
Observer

Why a Single 5.51-Carat Diamond Commanded $17.3 Million in Geneva

The triangular-cut blue-green stone has a color so improbable that, as the Gemological Institute of America notes in its ...
CNN

Record-breaking blue diamond could fetch $48 million at auction

One of the most valuable blue diamonds to ever feature at an auction could sell for more than $48 million, according to Sotheby’s. Named “The De Beers Cullinan Blue,” it is the biggest vivid blue ...
CNN

Heists? Burning stones? 5 incredible facts about this $31.8m rare blue rock

Another blue diamond has hit the auction block, but this particular rock has far more to show off than its $31.8 million price tag. Dubbed the De Beers Millennium Jewel 4, the stone is what diamond ...