Singer Katy Perry arrives at 1 OAK at the Mirage Hotel & Casino to celebrate the grand opening weekend and GiveLove charity event on January 27, 2012 in Las Vegas, Nevada.
(January 26, 2012 - Source: Jeff Bottari/Getty Images North America) see more angles »
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Katy Perry Gemstone Ring

Katy Perry wore an elegant gemstone ring at the 1Oak Las Vegas grand opening.
Brand: J.Molinari