A neckalce owned by Marie Antoinette will be auctioned in London in December 12, 2007.
Marie Antoinette, the French queen, died by the guillotine in 1793.
The queen gave the pearls to Lady Sutheland before the emabassy pulled out of France in 1792.
Lady Sutherland was the wife of British Ambassador Goerge Levenson-Gower.
The necklace was made for an 1849 wedding of the Sutherlnad-Levenson-Gower family.
It has a fringe of 21 gray drop-shaped pearls hanging from a diamond collar, which is set with 12 button-shaped, gold mounter pearls.
Source: Christie's International
Source: Linda Sandler @ Bloomberg News