The painting depicts a man standing at a round table, turned three-quarters, looking at the viewer. The portrait's hairstyle corresponds to late eighteenth-century fashion. He wears a red velvet caftan, a blue waistcoat embroidered with gold silk, and a jabot. The sleeves are adorned with lace, and he wears a white scarf around his neck. A black cloak with a white sable fur lining is pulled down from his shoulders and draped over his left arm. The diplomat raises his left hand while holding an open book with his right hand. The frame of the book partially overlays the inscription: "Titutiones Politiques Paris 1776".