1. The Kohinoor
Kohinoor diamond is the costliest and the most valuable diamond in the world. The value of the Kohinoor is unestimated. It was discovered in the state of Andhra Pradesh of India. The diamond shifted many hands like the Sikhs and the Persians and is now finally at London as a property of British Crown.
2. The Sancy Diamond
This 55.23-carat diamond is presently a part of the French Jewel Collection. This diamond doesn’t have any pavilion, just a pair of crowns. The value of the Sancy diamond is also priceless.
3. The Cullinan
The Cullinan Diamond costs $400 Million. It's the largest rough gem-quality diamond ever found in the entire world. The diamond weighs 621.35 grams.
4. The Hope Diamond
The hope diamond appears blue to the naked eye because of the traces of Boron in it, but under ultraviolet light, the diamond shines bright red. This diamond is currently present at Smithsonian Museum of Natural History in Washington D.C.
5. De Beers Centenary Diamond
De Beers Centenary Diamond costs $100 Million and is the highest grade of diamond that is colorless and is flawless internally and externally. It is classified as D level diamond by Gemological Institute of America.
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