An anonymous buyer purchased the necklace.
The pendant was part of a major jewel of the the last queen of France.
Sotheby's auction house international jewelry chief David Bennett said the sale set a new “world record” in royal jewelry sales in an auction.
A senior executive of Sotheby's auction house, Daniela Mascetti, told Anadolu Agency it was an excellent sale since there has not been any pearl necklaces sold for such an high price and it was a sale of the century for a jewel like this one.
Married to French King Louis the 16th, Antoinette is regarded as an ill-fated queen as she was guillotined in Paris at the age of 37 during the French Revolution.