Tiffany's got nothing on the American Museum of Natural History.
Last week, the museum unveiled its newest addition: the Wittelsbach-Graff Diamond, a 31.06-carat natural fancy deep blue diamond that will be on display through January 2011.
The Wittelsbach-Graff and Hope were mined in India in the 1600s and are the two largest diamonds in the world. After centuries of making the rounds among European royals, the Wittelsbach-Graff resurfaced in 2008, when it was bought by jeweler Laurence Graff, its current owner.
Regular museum admission gets you a peek at the diamond.