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Naturally Colored Diamond Blog

The 10 Most Expensive Diamonds from 2018

Posted by Tony Cathaway on 1/8/19 10:56 AM

2018 came and went, and while no diamond managed to break the record set by the Pink Star during 2017, there were plenty jaw dropping stones that managed to “wow” audiences and set headlines in the year that passed.

pink legacy diamond christiesThe Pink Legacy Diamond

The top diamonds sold during 2018 were:

  • A 50.47 Carat Colorless Diamond Ring, by Harry Winston
  • The Fancy Intense Blue Diamond Ring
  • The Farnese Blue Diamond
  • A 50.39 Carat Colorless Diamond Ring
  • A 51.71 Carat Colorless Diamond Ring
  • The Pink Diamond Heart Pendant
  • A 5 Carat Fancy Vivid Blue Diamond and Diamond Ring
  • The Bulgary Blue Diamond Ring
  • The Moussaieff Blue and Pink Diamond Necklace
  • The Pink Legacy Diamond

 

price of colored diamonds

Diamond Ring by Harry Winston

The 50.47 carat, Cushion brilliant-cut, VVS1 clarity, D color diamond managed to fetch an impressive $6.4 million on May 16, 2018, during  Christie's, Geneva Sale. The type IIa, is set in a platinum ring, size 6 ¾, by Harry Winston.

colorless diamond by harry winston - christies

Source: Christie's

Fancy Intense Blue Diamond Ring

This rare 3.47 carat, rectangular, step-cut, Fancy Intense Blue diamond, managed to sell for a respectable $6.66 million during Sotheby's, April 18th  New York sale. The final price tag for the stone, translates to $1.92 million per carat.

blue diamond sotheby's

Source: Sotheby's

The Farnese Blue Diamond

This historic 6.16 carat, pear cut, fancy dark grey-blue diamond, is set within a frame of pinched-collet set cushion-shaped diamonds, and was sold with a fitted case with a plaque mentioning the provenance of the stone. The SI1 clarity stone fetched a final price tag of $6.7 million during Sotheby’s May 15th Sale in Geneva. 

farnese blue diamond - sotheby's

Source: Sotheby's

50.39 Carat Colorless Diamond Ring

The unmounted stone was graded by the GIA as being a Flawless, D Color, with Excellent Polish and Symmetry. The type IIa colorless diamond was sold for $8.1 million during Sotheby’s May 15th Sale in Geneva. 

 50.39 carat colorless diamond sotheby's

Source: Sotheby's

51.71 Carat Colorless Diamond Ring

Similarly to the stone above, this diamond too was graded by the GIA to be of exceptional quality. The round brilliant cut, 51.71 carat, D color diamond, was given an Excellent grade for Cut, Polish, and Symmetry, all the while holding a type IIa classification. The diamond ultimately sold for an exceptional $9.2 million during Sotheby’s May 15th Sale in Geneva. 

51.71 carat colorless diamond sotheby's

Source: Sotheby's

The Pink Diamond Heart Pendant

This 15.56 carat, heart modified brilliant cut, Fancy Intense Pink diamond was set in a platinum and rose gold necklace, alongside circular-cut colorless diamonds. The type IIa, VS1 stone yielded $9.5 million during Christie's December 5th Sale, in New York.

pink diamond pendant christies

Source: Christie's

5 Carat Fancy Vivid Blue Diamond and Diamond Ring

 

This rare 5 carat, step cut, VS2, Fancy Vivid Blue diamond was mounted in an 18 karat, white gold ring, alongside colorless, baguette diamonds. The truly remarkable diamond managed to wow audience, as it ultimately sold for $13.8 million (or $2.76 million per carat) during Sotheby’s October 3rd Hong Kong sale.

fancy vivid blue diamond sotheby's

Source: Sotheby's

The Bulgary Blue Diamond Ring

This truly breathtaking 8.08 carat, cushion modified brilliant cut, VS2, Type IIb, Fancy Vivid Blue diamond was set in a platinum ring size 6 ¼ by Bulgari; decorated with triangular-cut colorless diamonds. The stone ultimately fetched a very impressive $18.3 million (or $2.26 million per carat) during Christie’s December 5th, New York sale.

bulgary blue diamond ring christiesSource: Christie's


The Moussaieff Blue and Pink Diamond Necklace

Perhaps one of the most beautiful pieces we’ve seen all year. This lot was comprised of a 8.01 carat,  pear cut. Fancy Vivid Blue diamond, surmounted by a  1.60 carat, circular cut Fancy Intense Pink Diamond, both of which were mounted on a golden double neckchain by Moussaieff. The piece was sold for $20.3 million during Christie’s May 29th Hong Kong sale.

moussaieff blue and pink necklace christiesSource: Christie's

The Pink Legacy Diamond

The final diamond on our list, the Pink Legacy is definitely not the least, both in terms of beauty and price. This beautiful 18.96 carat, VS1, emerald cut, Fancy Vivid Pink stone, was owned by the Oppenheimer family, until it was put for sale during Christie’s October 13th Geneva Sale. It was at that time that the diamond fetched an astounding $50 million ($2.7 million per carat), essentially shattering the price per carat record for pink diamonds, and removing the Pink Promise from its throne.

pink legacy diamond christies

Source: Christie's

Which diamond was your favorite? Do you have any honorable mentions you think we should have added to our list? Let us know! And as always, feel free to follow us on Twitter and LinkedIn.

For more colored diamond information, news, and investing insight, be sure to check out the articles below:

price of colored diamonds

Topics: Alternative Investments, colored diamonds, Sotheby's, Christie's

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