Enamels adorned jewelry in the 17th century but as the 18th century progressed, their use faded in favor of diamonds and gemstones. But with the French Revolution, ostentation was "out" and a neoclassical, understated presence was "in." This style prevailed for some time and waxed and waned over the coming decades.
While this could be mistaken for a ring created around 1790, it was designed circa 1840. We know this by the use of the poinçon (French hallmark) of the right facing eagle's head which only began in 1838.
French blue enamel serves as the background for a classical female figure holding a serving dish with a cup. Draped in gauzy folds of material, the figure is depicted in sepia and white hues and appears frozen in time.
A surround of 40 petite rose cut diamonds set into silver-topped gold, borders the eight sided plaque. A total of .20 carats, color I-L, and clarity SI1-3 creates a shimmering aura for the miniature painting.
Rose gold of 18k forms volutes and curling shoulders that taper to a thin shank with incised mid section.