The position of the hands corresponds to the dignified pose of a bourgeois woman─but in this particular mise-en-scène, it seems to be the result of the sitter’s movement. Mona Lisa must have been sitting perpendicular to the viewer, but in turning toward us has laid her right hand over her left.
An interesting detail: if you look closely at the outline of the index finger on her right hand, you will see a “pentimento”─a change made to the composition of the painting by the artist himself.
The small columns and parapet
Mona Lisa is sitting in a loggia, a space defined by a parapet with small columns whose bases are clearly visible, though the shafts are difficult to distinguish. These columns frame the distant landscape to the left and right, while also framing the seated figure.