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The world's rarest diamonds available to buy

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De Beers Millennium Jewel 4
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De Beers Millennium Jewel 4

The De Beers Millennium Jewel 4 has now been auctioned, reaching a sale price of $32 million.

This 10.10 carat, Internally Flawless, Fancy Vivid blue diamond is the largest oval blue diamond ever to appear for auction and is set be sold by Sotheby's Hong Kong on April 5, 2016. As the name suggests, it was part of the De Beers Millennium Jewels collection, comprising 10 rare blue diamond and one 203.4 carat white diamond (the Millennium Star - also in this list) which were displayed at the Millennium Dome and the subject of a consequent attempted jewellery heist.

The Millennium Jewel 4 is only the second diamond from the collection to be offered on the open market and, while it is unlikely to surpass the Blue Moon of Josephine which fetched $48.4 million in November 2015, estimates currently stand at a noteworthy $30-35 million.

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