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.

"There is obviously a niche in the market for historical jewels with fabulous provenances," Sotheby's jewelry specialist Andres White Correal said after a diamond-studded necklace with a possible link to Marie Antoinette's downfall sold for more than double the pre-sale estimate.

Composed of approximately 300 carats of old mine-cut diamonds, the historic piece was once worn during royal coronations and is rumoured to hold ties to the scandal that tainted Marie Antoinette’s reputation.