It is relatively unusual to find American profile miniatures painted on ivory. This example came from New Jersey and is in a typical American front opening case, with a rear glass covering woven hair, and was painted around 1830.
However, the artist has not yet been determined. One of the few American artists who did paint profile portraits on ivory was J H Gillespie (active 1792-1838), but he tended to have a pale background. Nevertheless, it is possibly by him.
The sitter is unknown. 1194a