Stones by zodiac signs

What is the most expensive carat of diamond?

1 place. Diamond “The Art of de Grisogono”, 163,41 carats, $33,7 million

A necklace from the de Grisigono jewelry company with a unique huge diamond weighing 163,41 carats was sold to an anonymous buyer in November 2017 at a Christie’s auction in Geneva for a record $33,7 million ($206260/carat). The preliminary cost estimate of the necklace with diamonds and emeralds was 25-30 million US dollars. This emerald-cut stone is the largest premium diamond ever offered at auction. Incredible diamond color – D, clarity – FL. It has excellent symmetry and polish. Specialists from the Gemological Institute of America classified this diamond as a type IIa diamond in their certificate. This is a rare and chemically purest type of diamond that has exceptional transparency. There are less than 2% of such diamonds in the world. The diamond was cut from a 404,20-carat diamond found in February 2016 in Angola. It took more than six months to research and cut the stone. To date (December 2019), this is the largest and most expensive colorless diamond ever sold at auction.

2nd place. Oval diamond (untitled), 118,28 carats, $30,8 million

A flawless oval-shaped diamond weighing 118,28 carats was sold in October 2013 at Sotheby’s Hong Kong for US$30,8 million ($260250/carat). The buyer of the stone made a bid over the phone and chose to remain anonymous. The name of the former owner of the diamond is also not disclosed. The preliminary cost estimate of the stone was 28-35 million US dollars. It is noted that this is the largest oval-shaped colorless diamond in the world. The diamond has the highest quality characteristics according to the GIA system: color – D, clarity – FL. It also has perfect symmetry and polish. Like the previous diamond, this stone is a rare, highly pure type IIa diamond. The original diamond crystal was found in South Africa in 2011 and weighed 299 carats before cutting. From October 2013 to November 2017, this diamond was the largest and most expensive colorless diamond sold at auction. This lot is on the Sotheby’s auction website

3rd place. The Winston Legacy Diamond, 101,73 carats, $26,8 million

The Winston Legacy Diamond, a pear-shaped diamond weighing 101,73 carats, was sold in May 2013 at Christie’s in Geneva for US$26,8 million ($254400/carat). The buyer turned out to be the jewelry company Harry Winston. The diamond got its name in honor of its new owner, jeweler Harry Winston. The estimate for the stone was 20-30 million US dollars. The characteristics of the stone are the highest: color – D, clarity – FL, ideal symmetry and polishing. According to the physical classification, it also belongs to rare type IIa diamonds. The diamond was created by cutting a 236-carat diamond found in the Jwanenga mine in Botswana. It took more than 21 months to process the stone. The Winston’s Legacy Diamond held the record for price and weight for colorless diamonds sold at auction for a very short period of time – from May to October 2013.

4th place. Emerald cut diamond (untitled), 100,20 carats, $22,1 million

A 100,20-carat emerald-cut diamond was sold in April 2015 at Sotheby’s in New York for $22,1 million ($220450/carat). The buyer of the stone remains unknown. The preliminary value of the diamond was 19-25 million US dollars. The characteristics of the stone are almost ideal: color – D, clarity – IF. It is also classified as a rare type IIa diamond. The diamond from which this diamond was cut was found by De Beers in South Africa and weighed about 200 carats. Cutting the stone took more than 1 year. It is the largest emerald-cut diamond sold by Sotheby’s and the first flawless diamond over 100 carats sold in the United States. The stone did not have a record for price, but was among the 4 most expensive colorless diamonds in the world ever sold at auction.

5th place. The Archduke Joseph Diamond, 76,02 carats, $21,5 million

The historic rectangular cushion diamond weighing 76,02 carats was sold in November 2012 at Christie’s in Geneva for US$21,5 million ($280000/carat). The buyer made the transaction anonymously. The preliminary value of the stone was about 15 million US dollars. The quality characteristics of the stone are very high: color – D, clarity – IF. The stone is also a rare type IIa diamond. The diamond was mined from the famous and already developed mines of Golconda in India, where the best large diamonds in the world previously came from. The unique stone previously belonged to the Habsburg dynasty. There is no exact information about how the diamond came into the possession of the dynasty. But legend says that in the 1936th century it belonged to Empress Maria Theresa, and then to her daughter Marie Antoinette. The diamond received its name in honor of the Austrian field marshal Archduke Joseph August, the first officially confirmed owner from the Habsburg family. In 1961, the Habsburgs sold the diamond to an unknown buyer. Later, it was put up for auction two more times: in 1993 and 2012. From November 2013 to May 2019, this stone held the record for the highest price at auction for a colorless diamond, and has still not (as of December 280000) broken its record price per carat for colorless diamonds – $XNUMX/carat. We recommend reading on the website Expensive jewelry as a gift for the New Year

1 place. CTF Pink Star Diamond, 59,60 carats, $71,2 million

A 59,60-carat oval-shaped pink diamond called “Pink Star” was sold in April 2017 at Sotheby’s Hong Kong for a record US$71,2 million ($1194600/carat). The diamond had a preliminary value of $60 million. The unique stone was acquired by the Hong Kong jewelry company Chow Tai Fook (CTF), which renamed the diamond “CTF Pink Star” in honor of the brand name. The gemstone has excellent quality characteristics. The color of this diamond according to the Gemological Institute of America grading system is Fancy Vivid Pink, clarity is IF. This diamond is a rare type IIa diamond. It was cut from a 132,5-carat diamond mined by De Beers in 1999 in South Africa. It took about 20 months to cut the stone. For the first time this diamond, under its old name “Steinmetz Pink”, was shown in public in Monaco in 2003. This diamond was previously exhibited at Sotheby’s auction in November 2013 in Geneva. Then he went for a record amount of $83 million. But at the end of February 2014, it became known that the buyer was unable to pay for the diamond and Sotheby’s bought the stone for itself for $72 million. At the moment (December 2019) this is the largest and most expensive pink diamond sold at auction. Also “CTF Pink Star” it is the most expensive gemstone in the world ever sold at auction.

2 place. The Winston Pink Legacy Diamond, 18,46 carats, $50,3 million

An emerald-cut, hot pink “Pink Legacy” diamond weighing 18,46 carats was sold in November 2018 at Christie’s in Geneva for $50,3 million ($2700000/carat). The estimate of the stone was 30-50 million dollars. The buyer of the jewelry was the Swatch Group, which owns the Harry Winston jewelry brand. The stone was given a new name in honor of the jeweler Harry Winston – “The Winston Pink Legacy”. Diamond color – Fancy Vivid Pink, clarity – VS1. The diamond from which this diamond was cut was mined around 1918 in South Africa and belonged to the Oppenheimer family, which owned the De Beers diamond mining company. The stone was finished being processed in 1920. The Winston Pink Heritage Diamond set a record price per carat for pink diamonds, which has still not been broken (as of December 2019) – $2,7 million/carat.

3 place. The Graff Pink Diamond, 24,78 carats, $46,1 million

A 24,78-carat rectangular step-cut pink diamond with rounded corners was sold in November 2010 at Sotheby’s in Geneva for $46,1 million ($1860000/carat). The preliminary value of the stone was 27-38 million US dollars. The new owner of the diamond was the famous jeweler Lawrence Graff, who gave the nameless stone the name “The Graff Pink”. Stone color – Fancy Intense Pink, clarity – VVS2. A report on the stone from the Gemological Institute of America (GIA) also stated that the diamond could potentially achieve FL clarity if it were recut to remove minor imperfections that would affect the clarity rating. The diamond was also classified as a rare physical type IIa diamond. The history of the unique stone can be traced only from the middle of the last century. It is not known for certain where and when the diamond was mined and cut. The first famous owner of the diamond was jeweler Harry Winston, who sold it to a private collector about 70 years ago. From then until this auction in 2010, the stone was never put up for auction. It is now known that Lawrence Graff has re-cut the purchased “The Graff Pink”. The new value of the stone’s mass is 23,88 carats, the loss was only 0,90 carats. At the same time, the risk of recutting the most expensive stone (at that time) sold at auction turned out to be justified. The new certificate from GIA for recut stone now indicates a more valuable color – Fancy Vivid Pink (fancy bright pink), and the clarity has become excellent – IF. According to some estimates, the cost of jewelry with such updated characteristics has increased by more than $10 million. In 2010-2017 this diamond was the most expensive pink diamond sold at auction.

4 place. “The Princie” diamond, 34,65 carats, $39,3 million

A large cushion-shaped pink diamond “The Princie” weighing 34,65 carats was sold in April 2013 in New York at Christie’s for $39,3 million ($1135000/carat). The estimate was 20-30 million dollars. The buyer of the stone was an anonymous collector. Stone color – Fancy Intense Pink, clarity – VS2. It is also a rare Type IIa diamond. The diamond from which The Little Prince was cut was mined more than 300 years ago at the famous Golconda diamond mines in India. One of its owners was Osman Ali Khan, the ruler of the city of Hyderabad, who in 1937 was recognized by Time magazine as the richest man in the world. But after World War II, his financial situation worsened and the diamond was put up for sale at Sotheby’s in 1960, where it was purchased by the jewelry house Van Cleef & Arpels. The diamond was named after the 14-year-old Prince of Baroda, who was present with his mother Maharani Sita Devi to celebrate the purchase at the Van Cleef & Arpels store in Paris. The price achieved at the auction makes this diamond the most expensive Golconda diamond ever sold at auction.

5 place. Pink Promise Diamond, 14,93 carats, $31,8 million

A bright pink oval diamond weighing 14,93 carats was sold in November 2017 in Hong Kong at a Christie’s auction for US$31,8 million ($2130000/carat). The preliminary cost estimate of the stone was $28-42 million. The buyer remained unknown. Stone color – Fancy Vivid Pink (fancy bright pink), clarity – VVS1. The stone is a rare type IIa diamond. The original owner of the stone was Stephen Silver, a passionate gemologist and jeweler, who purchased the diamond in 2013. The weight of the stone was then 16,21 carats, and the color was Fancy Intense Pink. Stephen assumed that if the stone was recut by changing its cut parameters, the color of the stone could become even more vibrant. It took several years to research, calculate and recut the diamond. After it was recut, the weight loss was 1,28 carats and the stone was re-certified by the GIA. The stone moved from the Fancy Intense Pink color grade to the brighter and highest color grade for pink diamonds – Fancy Vivid Pink, while the clarity value of the stone also improved. Higher specifications in color and clarity increased the value of the stone exponentially. The remarkable “remake” of the diamond, which Stephen Silver promised to make more vibrant, was given the name “Pink Promise.” We recommend reading on the website

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