Portrait of a Woman, Antoine Jean Gros
In the Metropolitan Museum of Art. Black chalk, 11 x 8 inches (28 x 19cm).
I love the way the application of the chalk is alternately bold and delicate. For such a seemingly basic material, chalk can be astonishingly subtle. With the help of a stomp, Gros has used it here like both a draftsman and a painter.
Link: Portrait of a Woman, Met Museum