14.6ct Oppenheimer Diamond Could Fetch $45m

Christie’s is set to auction off an ultra-rare 14.6-carat blue Oppenheimer Diamond that is expected to sell for between $35 million and $45 million.

It was owned by Philip Oppenheimer, the late chairman of the De Beers diamond-marketing cartel.

less than 2 percent of diamonds discovered in the world are blue the color comes from the presence of boron in the diamond

less than 2 percent of diamonds discovered in the world are blue. The color comes from the presence of boron in the diamond (photo: Christie’s)

In the diamond world, blue is one of the rarest and most sought-after colors. Kadakia said that less than 2 percent of diamonds discovered in the world are blue.

The rock will be the largest fancy vivid blue diamond ever sold at auction and is a so-called rectangular cut — among the most prized in the diamond world.

 Only 10 percent of all blue diamonds discovered are larger than a carat, so the Oppenheimer Blue is a highly prized freak of nature. It also has the highest color rating of "vivid."

Only 10 percent of all blue diamonds discovered are larger than a carat, so the Oppenheimer Blue is a highly prized at 14 carat. The Oppenheimer Blue also has the highest color rating of “vivid.”

Blue diamonds are also the most expensive on a per-carat price. The 12.03-carat “Blue Moon Diamond” was sold by Sotheby’s in November for $48.5 million, setting a new record of $4 million per carat.

The Blue Moon Diamond sold for a record-setting $4 million per carat.

The Blue Moon Diamond sold for a record-setting $4 million per carat in 2015. Photo: Cora International/Tino Hammid

If the Oppenheimer sells for the same per-carat price it would fetch more than $58 million.

The stone will be sold at Christie’s Geneva Magnificent Jewels sale on May 18.

photo: Christie’s

Sotheby's recent auction brought in $52M which included $4.3 million for the highest-profile lot, a Van Cleef & Arpels diamond necklace worn by the late Queen Nazli of Egypt.

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