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.

Rare antique diamond necklace expected to fetch more than £1m at auction - The 18th century diamond jewel of approximately 300 carats was worn to King George VI and Queen Elizabeth II’s coronations.

A rare antique diamond necklace worn at two British coronations is expected to sell for more than £1 million at auction.

Sotheby's will auction an 18th-century necklace with 500 diamonds, potentially linked to Marie Antoinette, on November 11.

A diamond necklace that has been worn at two British coronations, and is thought to have stones from the infamous necklace at the heart of a Marie-Antoinette scandal, is expected to fetch up to $2.8 million at auction.

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.

Set to take place in November, the Royal and Noble Jewels auction will be led by a dazzling, 18th-century diamond necklace with an equally dazzling pre-sale estimate of between $1.8 million and $2.8 million.