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The 30 Most Expensive Diamonds Ever Sold At Auction (2021)

Have you ever wondered what is the most expensive diamond in the world? What is the rarest diamond color? What colour diamond is most expensive? Are diamonds still a good investment?

To make your task easier, we have listed the the most expensive diamond in the world ever sold at auction that will definitely help you to answer your questions.

The most expensive Diamonds

Here are the most expensive diamonds ever sold at auction.

Cash Tips & Tricks – The 30 Most Expensive Diamonds Ever Sold At Auction

1) The Pink Start - USD 71.2 Mio

On 4 April 2017 in Hong Kong, Sotheby’s set a new world auction record for any diamond or jewel when the Pink Star, a 59.60-carat oval mixed-cut Fancy Vivid Pink Internally Flawless diamond, sold for HK$553 million / US$71.2 million.

The Pink Star was acquired by renowned jeweller Chow Tai Fook, with the winning telephone bid placed by Dr. Henry Cheng Kar-Shun, Chairman of the company.

The Pink Star has been renamed CTF PINK STAR in memory of the late Dr. Cheng Yu-Tung, father of the current chairman and founder of Chow Tai Fook, and commemorates the esteemed brand’s 88th anniversary.

2) The Oppenheimer Blue Diamond - USD 57.5 Mio

The Oppenheimer Blue Diamond is set with a fancy vivid blue rectangular-cut diamond, weighing approximately 14.62 carats, flanked on either side by a trapeze-shaped diamond; also accompanied by the original ‘Eight Blades’ mounting from Verdura, ring size 6, mounted in platinum.

The Oppenheimer Blue Diamond was sold for CHF 56,837,000 / US$57.5 million on 18 May 2016 at Christie’s auction.

3) The Blue Moon - USD 48.4 Mio

‘The Blue Moon’ – renamed ‘The Blue Moon of Josephine’ – is an exceptional Fancy Vivid Blue diamond ring.

The cushion-shaped fancy vivid blue diamond weighing 12.03 carats, mounted as a ring, size 471/2.

Fancy Vivid blue diamonds are extremely rare and the Blue Moon is no exception. It is an historic stone that is one of the rarest gems with this colour and in this size to be found in recent history.

‘The Blue Moon’ Diamond was sold for 48,634,000 CHF / US$48.4 million on 11 November 2015 at Sotheby’s auction.

4) The Graff Pink Diamond - USD 46.1 Mio

The “Graff Pink” Diamond is a fancy intense pink round-cornered rectangular step-cut diamond weighing 24.78 carats, set between shield-shaped diamond shoulders, in platinum, as a ring, size 55½.

According to the consignor the stone has not appeared on the open market since it was first purchased some 60 years ago from Harry Winston himself.

What makes this diamond stand out as a truly rare gemstone however is the combination of this exceptional colour and purity with the classic emerald cut – a style of cutting normally associated with white diamonds and immensely sought-after when found in the rare colours such as pink and blue. The shape is further enhanced by the gently rounded corners which impart a unique softness and charm to this truly outstanding gemstone.

This stone has been offered for sale from a private collection at the Sotheby’s auction in Geneva on 16 November 2010 and was sold for 45,442,500 CHF / US$46,1 million.

5) The Memory of Autumn Leaves - USD 42 Mio

The Memory of Autumn Leaves also named the “Apollo Blue” is a Fancy Vivid Blue, 14.54 carats, Internally Flawless.

It is amongst the purest, chemically, of all diamonds, with an alluring limpidity, while the Apollo belongs to the most elite group comprising less than one-half of one percent of all diamonds, pure, with the presence of boron, the element that gives the diamond its blue colour.

A Diamond of this quality, with this extraordinary depth and sophistication of colour, and of this size are unfathomably rare.
This stone has been offered for sale at the Sotheby’s auction in Geneva on 16 May 2017 and was sold for US$42,087,302.

6) The Princie Diamond - USD 39.3 Mio

The Princie Diamond is an historic cushion-cut fancy intense pink diamond, weighing approximately 34.65 carats.

A defining characteristic of the Princie diamond is its bright orange fluorescence when exposed to ultraviolet radiation.

The Princie is at this time the largest Golconda-type fancy intense pink diamond ever to be graded at the Gemological Institute of America and the mystery of its extraordinary history gives it an inestimable allure, rendering it truly a priceless treasure from the Kings of Golconda.

This stone has been offered for sale at the Sotheby’s auction on 16 Apr 2013 and was sold for US$ 39,323,750.

7) The Orange Diamond - USD 35.5 Mio

Pure orange diamonds, also named ‘Fire diamonds’ by famous gemologist Edwin Streeter in his book The Great Diamonds of the World (1882), are exceptionally rare in nature. So few have been graded in the world that the origin of their colour still bears a part of mystery.

The appearance of such a gem at auction is so scarce that amongst the very few fancy vivid orange diamonds that were ever sold at auction, the largest was less than 6 carats, making the ORANGE diamond, weighing as much as 14.82 carat, the ultimate possession for diamond collectors.

This stone has been offered for sale at the Christie’s auction on 12 November 2013 and was sold for CHF 32,645,000 / US$ 35,500,000.

8) De Grisogono D Flawless diamond - USD 33.7 Mio

The De Grisogono D Flawless diamond is set with a rectangular cut-cornered diamond, weighing approximately 163.41 carats, to the rectangular cut-cornered diamond and pavé-set emerald necklace, one side enhanced by two rows of pear-shaped emeralds, together with a shagreen and diamond-set bangle, 2017, 44.0 cm, mounted in gold.

This Diamond with flawless clarity, with excellent polish and excellent symmetry has been offered for sale at the Christie’s auction on 14 November 2017 and was sold for CHF 33,500,000 / US$ 33,700,000.

9) The Zoe Diamond - USD 32.6 Mio

The Zoe Diamond is a pear-shaped Fancy Vivid Blue diamond weighing 9.75 carats, mounted in platinum.

What we do know is that the amazing diamond was certified by the GIA as a 9.75 carat Fancy Vivid Blue Diamond – the highest color grading possible for blue diamonds and that it has a great clarity grading of vvs2 – an extra ordinary grading for diamonds of this size.

This stone has been offered for sale at the Sotheby’s auction on 20 – 21 November 2014 and was sold for US$ 32,645,000.

10) De Beers Millennium Jewel 4 - USD 32 Mio

The De Beers Millennium Jewel 4 diamond is set with an oval brilliant-cut diamond weighing 10.10 carats, flanked by two pear-shaped diamonds, to the circular-cut diamond surround, gallery and hoop, mounted in 18 karat white gold. Ring size: 6¾.

This fancy Vivid Blue Colour, internally Flawless, inscribed with ‘De Beers Millennium Jewel 4’ has been offered for sale at the Sotheby’s auction on 05 April 2016 and was sold in Hong Kong for 248,280,000 HKD / US$ 32,013,223.

11) The Unique Pink Diamond - USD 31.5 Mio

The Unique Pink Diamond has a fancy vivid colour and a remarkable weight of 15.38 carats, which displays a stunning clarity and exceedingly pure (type IIa) structure.

This rare combination of superior qualities allows the Unique Pink to hold the disctinction of a truly exceptional gem.

This Superb fancy vivid pink diamond has been offered for sale at the Sotheby’s auction in Geneva on 17 May 2016 and was sold for 30,826,000 CHF/ US$ 31,561,200.

12) The Oval Egg Sized Diamond - USD 30.6 Mio

The Oval Egg Sized Diamond is the largest D-Flawless diamond ever to be offered for sale at auction and the largest oval D-Flawless diamond in the world as graded by the GIA.

Only very few D-Flawless or Internally Flawless diamonds have appeared and sold at auction over the decades

This unmounted oval brilliant-cut diamond weighing 118.28 carats has been offered for sale at the Sotheby’s auction in Geneva on 07 October 2013 in Hong Kong and was sold for 238,680,000 HKD / US$ 30,600,000.

13) The Raj Pink - Estimated USD 29.7 Mio

The Raj Pink is set with a cushion modified brilliant-cut fancy intense pink diamond weighing 37.30 carats, size 52.

Discovered and mined in South Africa in 2015, the rough crystal was studied with extreme precision during the course of one year before it was passed to the hands of a master cutter.

With its unmodified, Fancy Intense pink hue, substantial size, and desirable clarity, the Raj Pink is certainly one of those gems that only few may have the honour of experiencing

This Diamond has been offered for sale at the Sotheby’s auction in Geneva on 15 November 2017 in Geneva and was estimated between US$ 19,834,978 and US$ 29,752,467.

The current record price per carat and for any Fancy Intense Pink diamonds was set by ‘The Graff Pink’ weighing 24.78 carats, sold in Sotheby’s Geneva in November 2010 for $46.2 million.

14) The Spirit of the Rose - USD 27.3 Mio

Unearthed in July 2017 from the Ebelyakh deposit in the Republic of Sakha (Yakutia) in the northeast of Russia, The Spirit of the Rose is the largest pink crystal ever mined in Russia. A miraculous pink crystal weighing 27.85 carats.

This superb and exceptional Fancy Vivid Purple¬Pink Internally Flawless diamond has been offered for sale at the Sotheby’s auction and was sold at 24,393,000 CHF / US$ 27,356,749.

Given their rarity, it is unsurprising that the value of pink diamonds has increased considerably over the centuries. The current record for a pink diamond sold at auction is held by the ‘CTF Pink Star’, a 59.60-carat oval mixed-cut Fancy Vivid Pink, Internally Flawless diamond which was auctioned at Sotheby’s Hong Kong in April 2017 for $71.2 million USD.

15) The Archduke Joseph Diamond - USD 22.8 Mio

The Archduke Joseph Diamond is an unmounted cushion-shaped diamond weighing approximately 76.02 carats, in purple leather fitted box which was cut from the diamond known as the ‘Archduke Joseph Diamond”.

Blessed with a purity of colour and high degree of transparency, which are particular to the world’s finest natural type IIa diamond (the purest type in terms of chemistry). Diamonds of this type and size, displaying such a superior quality as well as an antique cutting style, are extremely rare and will unequivocally evoke references to the historic term of ‘Golconda”

The Archduke Joseph Diamond has been offered for sale at the Sotheby’s auction in Geneva on 13 November 2012 in Geneva and was sold at CHF 20,355,000 / US$ 22,834,239.

16) The Winston Blue - USD 23.8 Mio

17) The Perfect Pink - USD 23.1 Mio

18) The "Perfect" Diamond - USD 22 Mio

19) Magnificient Coloured Diamond - USD 20.6 Mio

20) Fancy Vivid Purplish Pink Diamond - USD 19.8 Mio

21) The Graff Vivid Yellow - USD 16.3 Mio

22) The Dream Autumn Leaves - USD 15.3 Mio

23) The Victor Diamonds - USD 15.6 Mio

24) The Magnificient Diamond - USD 14.2 Mio

25) The Ai ‘爱’ Diamond - USD 13.8 Mio

26) The Harry Winston Diamond - USD 12.8 Mio

27) The Heart-Shaped Diamond - USD 10.7 Mio

28) The Annenberg Diamond - USD 7.6 Mio

29) The Farnese Blue - USD 7.5 Mio

30) The Very Fine Fancy Pink Diamond Ring - USD 7.2 Mio

31) De Beers Millennium Jewel 11 - USD 6.4 Mio

32) The Round Brilliant Diamond - USD 6.2 Mio

Diamonds as an Investment

Since 2008 the global economy has known many ups and downs and it is during these difficult times that people start to look for real alternative investments.

It is also during these times that physical commodities  like Classic Cars or even  Masterpieces are appreciated showing an increase in the value of gold, silver and lately… diamonds and natural colored diamonds.

The use of diamonds as an investment and financial hedging tool has grown rapidly over the last few years.

The reason is quite obvious and actually makes lots of sense:

1. Diamonds don’t take up room and have forever been used as an excellent means of transfer.

2. A diamond is durable and as the hardest substance on earth doesn’t break or wear off.

3. Diamonds are inflation Proof.

4. You can enjoy it while you have it.

5. Diamonds make you feel safer unlike stocks and other financial items

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Mat is the founder of cashtipsandtricks and has been working in the financial sector in Luxembourg for the past 10 years and brings his insights as an investor and entrepreneur.

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