Best Oscar jewels

Best actress winner Natalie Portman paired her deep violet Rodarte gown with matching Tiffany & Co. tassel earrings.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

Best actress nominee Nicole Kidman wore a 19th century Fred Leighton necklace with her Dior gown to the ceremony.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

Best supporting actress winner Melissa Leo wore a stunning spider necklace by Jay Carlile for Forevermark with her Marc Bouwer gown.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

Singer Celine Dion paired her Giorgio Armani Prive design with a diamond and emerald necklace from Bulgari.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

Gwyneth Paltrow wore earrings by Louis Vuitton with her Calvin Klein Collection column gown.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

Actress Emma Stone complemented her colorful Chanel dress with a green tourmaline and dimaon Van Cleef & Arpels cocktail ring from the L'Atlantide Collection.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet

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.

Pictures: Oscar fashion trends
Pictures: 2011 Oscar red carpet