A natural pearl and diamond pendant once owned by Marie Antoinette is held by a model during a press preview ahead of the upcoming auction "Royal jewels from the Bourbon Parma Family" at Sotheby's in Geneva November 7, 2018. (Photo/Agencies)
A model holds a natural pearl and diamond pendant once owned by Marie Antoinette together with wearing a pair of natural drops and a necklace featuring 119 natural pearls during a press preview ahead of the upcoming auction "Royal jewels from the Bourbon Parma Family" at Sotheby's in Geneva November 7, 2018. (Photo/Agencies)
A model holds a diamond ring bearing the initials MA for Marie Antoinette and containing a lock of her hair during a press preview ahead of the upcoming auction "Royal jewels from the Bourbon Parma Family" at Sotheby's in Geneva November 7, 2018. (Photo/Agencies)
A model holds a diamond tiara part of the collection of Charles X the last king of France during a press preview ahead of the upcoming auction "Royal jewels from the Bourbon Parma Family" at Sotheby's in Geneva November 7, 2018. (Photo/Agencies)
