The World’s Most Expensive Blue Diamonds

In this post we will be looking at the world’s most expensive Blue Diamonds. The fascination around blue diamonds can be traced back to one very special diamond and one by which all other blue diamonds are measured, we of course talking about the Hope Diamond. Fancy blue diamonds are very rarely found in nature and this is why the finest quality examples have regularly set world record prices.

In all of our most expensive series, we only look at singular stones. This was we can calculate the price per carat, which unfortunately cannot be done with pairs found in earrings or sets found in necklaces.

5) De Beers Millennium Jewel 4

Weight: 10.10 Carats
Sale: Sotheby’s, Hong Kong, 5th April 2016
Sale Price USD: $32 Million
Sale Price GBP: £22.4 Million

This stunning fancy vivid blue diamond was part of De Beers magnificent Millenium Jewels collection that was headlined by the 203.04 carat Millennium Star Diamond. It was the collection that was nearly stolen at the infamous Millenium Dome raid in the year 2000. Most of the collection was sold of privately but in April 2016 the oval cut 10.10 diamond sold at the Sotheby’s sale in Hong Kong for just over $32 million, this lead to many within the diamond industry to speculate as to how much the Heart of Eternity would fetch if it was ever auctioned off.

4) The Zoe Diamond

Weight: 9.75 Carats
Sale: Sotheby’s, New York, 20th November 2014
Sale Price USD: $32.6 Million
Sale Price GBP: £20.8 Million

The Zoe Diamond is the smallest diamond on this list and that just shows how impressive a specimen it is. It was graded by the Gemological Institute of America as a fancy vivid blue diamond which is the highest colour grade, the VVS clarity is also exceptional for a stone of this size. When it sold for $32.6 Million in November 2014 it set a new world record price for a blue diamond, the previous record was set in December 2008 by the The Wittelsbach Diamond which sold for $24.3 Million.

3) The Memory of Autumn Leaves Diamond

Weight: 14.54 Carats
Sale: Sotheby’s, Geneva, 16th May 2017
Sale Price USD: $42 Million
Sale Price GBP: £32.5 Million

The diamond with the most unique name on the list and the sale of this diamond was also a bit different, this is one half of one perhaps the finest pair of diamond earrings ever created but each earring was sold separately. The sale price of $42 Million dwarfed the $15.3 Million achieved by its sister earrings know as the Dream of Autumn Leaves which is set with a 16 carat fancy pink diamond.

2) The Blue Moon of Josephine

Weight: 12.03 Carats
Sale: Sotheby’s, Geneva, 11th November 2015
Sale Price USD: $48.4 Million
Sale Price GBP: £31.9 Million

When the Blue Moon sold for $48.4 Million, it sent shock waves throughout the jewellery world as it became the most expensive diamond in history but what was even more extraordinary was the story that the buyer, Hong Kong businessman Joseph Lau bought the diamond for his 7 year old daughter. It was also renamed The Blue Moon of Josephine in honour of his daughter.

1) The Oppenheimer Blue Diamond

Weight: 14.62 Carats
Sale: Christie’s, Geneva, 18th May 2016
Sale Price USD: $57.5 Million
Sale Price GBP: £39.5 Million

The period between 2010 and 2017 was an astonishing period in the jewellery world, while many were still reeling from the financial crash in 2008 there were seemingly diamonds breaking sale records every year and in May 2016 The Oppenheimer Diamond set a new world record price for a diamond, beating the record set six months earlier by the Blue Moon of Josephine by more than $9 Million. The 14.62 carat fancy vivid blue diamond is one of the finest examples of a blue diamond and while the Pink Star took the title of most expensive diamond in 2017, it is still the most expensive blue diamond in history.

All prices were calculated using the historical exchange rate tool on from the sale price that was found on the websites of the respective auction houses.

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We would like to thank Sotheby’s and Christie’s for the images that we used in this post.