It is thought that some of the diamonds may have come from the necklace linked to a scandal that contributed Marie-Antoinette's death, Sotheby's said.

A mysterious 18th century necklace made from around 500 diamonds, some of which are believed to have been taken from a piece that contributed to Marie Antoinette's demise, will go on sale in November,

The 300-carat diamond necklace is rumored to have ties to the scandal of the "Affair of the Necklace" and advent of the French Revolution.

A rare diamond necklace with possible links to former French queen consort Marie Antoinette is to be auctioned in November with a price estimate of up to $2.8 million.

A rare antique diamond necklace worn at two British coronations is expected to sell for more than £1 million at auction. The 18th-century diamond piece of approximately 300 carats was worn at King George VI and Queen Elizabeth II’s coronations by members of the Marquess of Anglesey family,

As they say, a piece of jewelry has the power to tell many stories. This particular diamond necklace, which is being sold by Sotheby's this fall for an estimated $2.8 million, tells royal-related ones both good and bad.

The diamond necklace was worn at the coronation of two English monarchs and was created in the decade before the French revolution.