The necklace containing around 300 carats of diamonds was bought by an unidentified woman who put in her bid over the phone, Sotheby's said.

The magnificent necklace may contain diamonds involved in a scandal surrounding Marie-Antoinette, that would eventually trigger the French Revolution.

Experts say some of the stones in the piece are a match with the original diamonds central to a royal scandal.

The 300-carat necklace thought to be at the center of the infamous 'Affair of the Diamond Necklace' that contributed to the French Revolution sold at auction in Geneva

Worn at Queen Elizabeth II’s coronation in 1953, the 300-carat diamond necklace sold Wednesday for more than twice its estimate at an auction in Geneva.

A diamond necklace supposedly related to a scandal that precipitated the downfall of Marie Antoinette, Queen of France in the 18th century, was auctioned on Wednesday in Geneva for 4.26 million Swiss francs (4.