Aniston’s, Knightley's Oscar Necklace on Display

Jennifer Aniston’s rare Platinum and diamond necklace by Bulgari that she wore to this year’s Oscars will be exhibited in boutiques around the world. She's seen in the photo left, in her Rochas gown from the 2006 Oscars.

The necklace dates back to the 1930s and is usually housed in Rome's Via Condotti.

The Bulgari boutique in Chicago is the latest destination for the vintage Platinum necklace, which will appear among other items.

A Bulgari collar worn by Keira Knightley at the Oscars (seen in above right, in her custom Vera Wang gown carrying a Robert Vivier clutch) will also be part of the display. It was originally made for the shah of Iran.

Platinum is the metal of choice for A-listers around the world, with a prominent Indian actress also choosing a platinum item as a gift to a temple.