5. De Beers Centenary Diamond
The De Beers Centenary Diamond is, at 273.85 carats (54.77 g).The Centenary Diamond is rated in color as grade D color by the Gemological Institute of America, which is the highest grade of colourless diamond and is internally and externally flawless. It was named the Centenary Diamond as it was presented in the rough for the Centennial Celebration of De Beers Consolidated Mines. Estimated value of this diamond is at least USD 100 million.
4. The Hope Diamond
The Hope Diamond, also known as "Le bleu de France" or "Le Bijou du Roi",is a large, 45.52 carats (9.10 g),deep-blue diamond, housed in the Smithsonian Natural History Museum in Washington, D.C. It is blue to the naked eye because of trace amounts of boron within its crystal structure, but it exhibits red phosphorescence after exposure to ultraviolet light. This diamond is famous for supposedly being cursed, and it has a long recorded history with few gaps in which it changed hands numerous times on its way from India to France to England and to the United States. It has been described as the "most famous diamond in the world" and, after the Mona Lisa, it is the second most-visited artwork in the world. Estimated value of this diamond is $200–$250 million USD.
3. The Cullinan
The Cullinan diamond is the largest rough gem-quality diamond ever found, at 3,106.75 carats (621.35 g).Estimated value of this diamond is over £200 million, $400 million. Right now it is in the Crown Jewels of the United Kingdom.
2. The Sancy Diamond
The Sancy, a pale yellow diamond of 55.23 carats (11.05 g), was once reputed to have belonged to the Great Moguls of antiquity, but is more likely of Indian origin owing to its cut which is unusual by Western standards. Current owner is The Louvre, Paris, France. Its price is not estimated yet.
1. Kohinoor
The Kohinoor which means "Mountain of Light" in Persian, is a 105 carat (21.6 g) diamond (in its most recent cut) that was once the largest known diamond in the world. The Kohinoor originated in the state of Andhra Pradesh in India .It has belonged to various Hindu, Mughal, Turkic, Afghan, Sikh and British rulers who fought bitterly over it at various points in history and seized it as a spoil of war time and time again. It was finally seized by the East India Company and became part of the British Crown Jewels when Queen Victoria was proclaimed Empress of India in 1877.Its price is not estimated.