The coat of arms of Jacques de Crussol d'Uzès, 17th Duke of Uzès, is blazoned as follows. The shield was established for Antoine de Crussol, 1st Duke of Uzès, and has remained unchanged since.
The shield is quartered: in the first and fourth quarters, per pale, the first, fascé Or and Vert of six pieces (Crussol), and the second, Or three chevrons Sable (Levis); in the second and third quarters, counterquartered, Azure three mullets Or in pale (Gourdon), and Or three bends Gules (Genouillac); overall, an inescutcheon Gules three bends Or (Uzès).
The shield is surmounted by an open ducal coronet when the coat of arms is displayed with all its full attributes. For simplified versions of the arms or for a cipher of the Head of Name and Arms, the ducal coronet is closed and encircled by a cap ornamented with a gold tassel.
The supporters are two natural lions, vilené and lampassed. The crest is a lion.
The motto "Ferro non Auro", meaning "By iron, not by gold".
The arms of the Duke of Uzès, Head of Name and Arms, display the ducal mantle lined with ermine, with the curtains raised on either side.