The World of Rare Necklaces: The Beautiful Blue Empress
The runner-up for rare necklaces is a $12 million piece in the Robert Mouawad private collection. It has a 70 carat diamond surrounded by a multitude of colored diamonds, which appear to include yellow, pink, and blue.
Who knew that The Necklace Satine, worn by Nicole Kidman in Moulin Rouge, would be considered a bargain next to these two. It's got 1,308 diamonds for a total of 134 carats, and was made just for the movie. It's gorgeous, but "only" worth about a million dollars.