Who owns Marie Antoinette diamonds?
Sarah Garza
Updated on May 27, 2026
The insignia was originally owned by Charles X, Marie Antoinette's brother-in-law. The diamonds later passed to Robert I, Duke of Parma (1848-1907). The frame of Charles X's order, which originally held the diamonds, has remained in the family and will also be offered in November. The estimate is $150-$300.