8. The Heart of Eternity : $16 Millions

The Heart of Eternity is a 27.64 carats (5.528 g) diamond with a color rated as Fancy Vivid Blue by the Gemological Institue of America. This diamond is very rare class of colored diamond. It was cut by the Steinmetz group before sold to De Beers Group. The diamond itself was found in premier diamond mine in South Africa.

7. Wittelsbach Diamond : $ 16.4 Millions

The Wittelsbach diamond (Der Blaue Wittelsbacher) is a 35.36 carats (7.11 g) blue diamond with size of 40 mm in diameter with 8.29 mm in depth and VS 2 in clarity. It was become part of both Austrian and Bavarian crown jewels, with color and clarity has been compared to the Hope Diamond (you can see below on No. 4).