The World's Largest Blue Diamond Is Up for Sale (If You Have $45 Million)

Image by Christies
Image by Christies

Fancy treating yourself? The world’s largest ever blue diamond is going up for auction on May 18th at Christie’s in Geneva. But you better have a healthy bank balance: It’s expected to sell for somewhere in the region of $45 million.

The stone—known as the Oppenheimer Blue, because it was previously owned by Sir Philip Oppenheimer who used to run De Beers—is a whopping 14.62 carats. That’s about a tenth of an ounce, if you’re not used to handling diamonds.

Its size is only part of the justification for the price tag, though. Its color is the other major selling point: According to Bloomberg, only 0.0001 percent of all diamonds that come out of the earth are blue. Better get the check book out.


[Christies via Bloomberg]

Contributing Editor at Gizmodo. An ex-engineer writing about science and technology.

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I feel like some people may look at this picture and think that it’s a big stone. It really isn’t.

I don’t know too much about various cuts and shapes, but this appears to be an emerald cut (someone correct me if I’m wrong here). With that said, it should be in the ballpark of 17mm length x 12mm width x 8mm depth (or if you hate the metric system, about 2/3" x 1/2" x 1/3".)

In other words, this is compressed charcoal smaller than a thimble, yet somehow worth nearly twice as much as a 27,000 sq/ft castle on 500 acres in France.

Just sayin’....