9. The Moussaieff Red diamond ($ 7 Million)



The Moussaieff Red Diamond is a diamond measuring 5. 11 carats (1. 022 g) with a triangular brilliant cut (Sometimes Called a trillion or a trilliant cut), rated in color as Fancy Red by the Gemological Institute of America, with the size of 5. 11 carat (1. 022 g) with a triangular brilliant cut, given a color as Fancy Red by the Gemological Institute of America. The Moussaieff Red is displayed as part of the Smithsonian’s “The Splendor of Diamonds” exhibition, in addition to the De Beers Millennium Star and The Heart of Eternity. Although this may seem relatively small when compared to other famous diamonds, in fact, the Moussaieff Red is the largest Fancy Red the GIA reports having value.

10. The Allnatt Diamond ($ 3 Million)



The diamond is named after one of the holders, Major Alfred Ernest Allnatt, a soldier, sportsman, art patron and benefactor. The Allnatt Diamond is a diamond the size of 101. 29 carat (20. 258 g) with a cushion cut, rated in color as Fancy Vivid Yellow by the Gemological Institute of America. Although it’s not known precisely where the originating Allnatt, many experts believe that it may be found in what is now known as the De Beers Premier Diamond Mine.