Attempts to resolve details in the dark areas of this image did not work. From Wikipedia. Franceso Hayez' Wikipedia article is here.
Antonietta Tarsis Basilico wears a somber black satin dress trimmed with black lace in this 1851 Hayez portrait.
Keywords: 1851, Hayez, Italian, straight coiffure, veil, lace, vee neckline, modesty piece, bertha, vee waistline, full skirt, earrings, brooch, bracelets, fan, handkerchief