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Famous jewels

Beyonce's 18-carat engagment ring from Jay-Z. Pictured: Beyonce watches Rafael Nadal of Spain and Novak Djokovic of Serbia play during the Men's Final on Day Fifteen of the 2011 US Open at the USTA Billie Jean King National Tennis Center on September 12, 2011 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Clive Brunskill/Getty Images)

World famous jewels

Christie's auctioned off the Archduke Joseph Diamond for nearly $21.5 million on Nov. 13, a world auction record price per carat for a colorless diamond. Here is a look at some other rare baubles, from Elizabeth Taylor's personal collection to the world's first ring carved from a diamond created by Swiss company Shawish Jewelry.