14.6 carat blue diamond

Christie’s is set to auction the exceptional 14.6 ct Vivid Blue diamond, it could sell for as much as $45 million a new record for a blue diamond.

Blue diamond is one of the rarest and valuable of colours, the colour comes from the carbon bonding with boron.

Only one in ten of all blue diamonds are larger than a carat and fewer have the highest colour rating of vivid. Vivid is the purest blue colour, dark rich, navy blue.

The diamond, called the Oppenheimer Blue, was owned by Philip Oppenheimer, the late chairman of the De Beers diamonds.

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