2010 Oscar Fashions: Mariah Carey's Piaget Diamond Watch
Mariah Carey wore some spectacular jewels at the 82nd Academy Awards. Mariah, who co-starred in Precious, wore Piaget's newest Limelight Jazz
inspiration cuff watch in white gold which is set with 591 brilliant-cut diamonds and 3 pear-shaped diamond drops. Mariah wore a midnight blue Valentino gown.
Here's a closeup of the watch and Mariah's wedding ring: