7,The mountain of light diamond (Koh-I-Noor means mountain of light in Persian), one of the top ten famous diamonds in the world, and one of the most expensive diamonds in the world. This diamond has the oldest recorded history, and its earliest record can be traced back to 1304. It weighs approximately 108.93 carats (21.6g) and was once the largest diamond in the world. It comes from the mines of Andhra Pradesh, India. It has gone through the rulers of Sikhism, Mughal and Persian empires, and has also caused conflicts with each other. The Light Mountain Diamonds are 36.00mm, 31.90mm, 13.04mm in length, width and height respectively. They are now owned by the British Royal Family. They were cut again during the reign of Queen Victoria, and then mounted on the Crown of the Queen of England and placed in the Tower of London. .
6: Stein Metz Pink Diamond Value: US$25 million
The Steinmetz pink diamond weighs 50.6 carats and is about 11.92g. It is rated as a vivid pink diamond by the American Gemological Association, and has a color grade of vivid pink. Shining brilliantly at the Diamond Light exhibition in the Nigeria Museum.
6,Pink Star Value: US$71 million
The Pink Star was mined in South Africa by De Beers in 1999. The rough stone weighs 132.5 carats. It took a full two years to polish it. Finally, a 59.6 carat pink star was obtained. This pink star is historically assessed by the Gemological Institute of America. The largest internally flawless bright pink diamond, its color and clarity have been rated as the highest rating of pink diamonds. In terms of chemical composition, it has been rated as the purest quality. In 2017, the Pink Star was sold for US$71 million at the Hong Kong Jewelry Auction, setting a new global diamond auction record.