5 Biggest Diamonds Ever Found

biggest diamond cullinan

5) The Cullinan II – 317.40 carats (63.48 g) – The Cullinan II is a part of the Cullinan diamond, the biggest rough diamond ever excavated, at astonishing 3,106.75 carats (621.35 g). In 1910 it was set into the band of the Imperial State Crown where it remains to this day.  It has an estimated value of around $400 million.

  • The Cullinan Diamond, weighing 3,106 carats in its rough state, was first discovered in 1905 at a mine near Pretoria in South Africa
  • It was originally thrown away as it was thought it to be too large to be a diamond
  • Once recovered, it was presented to King Edward VII as a gift and cuts were used in the Crown Jewels
  • Other cuts were used to make brooches, necklaces and earrings worn by royalty including Queen Elizabeth II throughout her 60-year reign
  • Seven of the nine cuts of the gem are to go on public display at Buckingham Palace this summer to celebrate Queen’s Diamond Jubilee
biggest diamond nizam

4) Nizam Diamond – 340 carats (68 g) – Believed to have been the most famous diamond in the 1800s.  The story goes back to the rulers of Golconda, and is believed to have been found at Kollur Mine.  The precious stone gets its name from the Prince Nizam of Hyderabad.   Estimated value of $150 million.


biggest diamond ever incoparable

3) The Incomparable Diamond – 407.48 carats (81.5 g) –

The Incomparable was found in its rough state weighing 890 carats, and was found in the town of Mbuji Mayi in the Democratic Republic of Congo (formerly Zaire) in the 1980s. It was found by a young young girl playing in a pile of rubble outside her uncle’s house. This rubble had been legitimately collected from old mine dumps from the nearby MIBA Diamond Mine, having been rejected during the recovery process as being too bulky to be worth scanning for diamonds. The girl gave the diamond to her uncle, who sold it to some local African diamond dealers, who in turn sold it to a group of Lebanese buyers operating out of Kinshasa.

It was later purchased in Antwerp by the Senior De Beers Buyer. As a result, Sir Philip Oppenheimer, then president of the Central Selling Organization and a De Beers director, sold it to Donald Zale, chairman of the board of the Zale Corporation, the Dallas-based jewelry store chain. He bought the diamond in partnership with Marvin Samuels, of the Premier Gems Corporation, and Louis Glick, both prominent figures in the New York diamond industry. The huge stone was finally unveiled in November, 1984, which coincided with the Zale Corporation’s 75th anniversary (their Diamond Anniversary). Shortly afterwards it was put on display at the Natural History wing of the Smithsonian Institute in Washington DC.


biggest diamond in the world

2) The Cullinan I – 530.2 carats (106 g) – Part of the Cullinan diamond mentioned beforehand, the Cullinan I is the best of the best with it’s 530.2 carats (106 g) and perfect clarity. Completely flawless, it is a true wonder rightfully located as a part of a British Crown Jewels scepter.

biggest diamond ever found

1) The Golden Jubilee Diamond – 545.67 carats (109.13 g) – Since it’s discovery in 1985, the Golden Jubilee Diamond has taken over the title of the biggest diamond ever found with a staggering weight of 545.67 carats (109.13 g).  The stone was designed by Gabi Tolkowsky, who also designed the 273.85-carat Centenary Diamond, which is the largest D-Flawless diamond in the world. The Golden Jubilee was presented to the King of Thailand in 1997 for his Golden Jubilee – the 50th anniversary of his coronation. Prior to this event, the stone was simply known as the Unnamed Brown.


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