Act 3, Scene 4: the jewel
Olivia gives her picture to Cesario. Olivia invests this picture with symbolic significance: it represents her honor and her commitment to Cesario.
The duel is prepared, but interrupted as the play returns to Cesario and Olivia in order to increase Viola’s problems: for Cesario besieged by aggression, that of Olivia in love and of Sir Andrew.