The Marie Antoinette diamonds - The original earrings were owned by Marie Antoinette, the queen of France; guillotined in 1793 during the French Revolution. Said to be a gift from her husband, King Louis XVI. According to one legend, she had them with her when she was arrested fleeing the French Revolution in 1791. Grand Duchess Tatiana Yousupoff of Russia later acquired the earrings. They stayed within her family until 1928.