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76-Carat Archduke Joseph Diamond May Sell In Auction For $25 Million

11/13/2012 03:30 EST | Updated 11/13/2012 03:30 EST

Are you planning to propose, but haven't found quite the right diamond?

Well, get out your chequebooks, folks -- because the world's most insanely beautiful diamond is being auctioned off today!

The Archduke Joseph diamond weighs in at a whopping 76 carats, and used to belong to Austrian royalty. It's a cushion cut, and is rated 'D' grade -- which we think just means it's really, really sparkly.

See it in action below -- and prepare to be mesmerized by the twinkling facets! Marvel at the perfect clarity of this (literally) flawless gem! Feel nauseous when you hear the auction estimate -- 25 million dollars!

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