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Actress Cate Blanchett accented her lilac Givenchy Couture design with jewels from the Van Cleef & Arpels vintage collection, including earrings with yellow and white diamonds, and a 1946 Tassel bracelet, which boasted 127 diamonds, set in yellow gold.
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Presenter Marisa Tomei added a splash of color to her Charles James 1950 Couture gown with Van Cleef & Arpels earrings and matching bracelet made of Ceylon sapphires, diamonds and emeralds, set in yellow gold.
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Presenter Robert Downey Jr. added some bling to his navy blue tuxedo by Prada with a Van Cleef & Arpels timepiece made of a hand-painted aventurine glass dial, set in a 18K white gold with 96 baguette diamonds on an alligator strap.
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Leo's fellow nominee and "The Fighter" costar, Amy Adams, beamed in her sparkly L'Wren Scott column gown and an emerald and diamond necklace from Cartier.
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Actress Scarlett Johansson offset her lacy burgundy Dolce & Gabbana gown with a pair of ruby stud earrings and a dragon flower ruby ring from the Anna Hu Haute Joaillerie collection.
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The Anne Hu Haute Joaillerie hairpiece actress Hilary Swank wore with her Gucci gown was made of purple titanium metal with approximately 200 briolette silver-gray and white diamonds. She also paired her look with a Gardenia ring from the same designer.
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Liv Tyler, seen with her dad Steven Tyler at the Vanity Fair Oscar party, wore a rose gold cuff and "cord style" diamond earrings from Van Cleef & Arpels with her black Givenchy gown.
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Actress Emma Stone complemented her colorful Chanel dress with a green tourmaline and dimaon Van Cleef & Arpels cocktail ring from the L'Atlantide Collection.
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Bryce Dallas Howard stepped out for the Vanity Fair Oscar party in Kate Spade and a necklace made of 98 diamonds totaling 65 carats in white gold by Van Cleef & Arpels.
