They say that a man should spend three month's salary on an engagement ring, so who do you have to date to win over one of the world’s most famous and historic diamonds, the Archduke Joseph? Well seeing as this jaw-dropping, 76.02 carat D color (the most colorless variety of diamond) Internally Flawless Golconda diamond just made history at Christie’s Geneva by selling for $18.8 million we are thinking your only option is a prince (sorry ladies, Bill Gates is already taken.)

Chairman of Black, Starr & Frost, Alfredo J. Molina, remarked, “The Archduke Joseph Diamond is considered the finest and largest perfect Golconda diamond ever to appear at auction, with a noble lineage and royal provenance literally 'Fit for a Queen.' I was privileged to be its guardian and champion for the past 13 years, but now it is time for the Archduke to continue on its immortal journey."