The Missal of Cardinal Angelo Acciaiuoli

Selective use of egg yolk binder

Artists' Materials

This suggests a rigorous, hierarchical division of labour between the main artists, who painted the figures within initials and borders, and their assistants, who provided the ornamental parts of initials and borders. This paradigm is consistent with the results of technical analyses carried out on other contemporary manuscripts decorated by these and other artists, who gathered around the celebrated panel painter and illuminator Lorenzo Monaco. It is worth noting that blue areas painted with precious ultramarine never contain egg yolk, probably to avoid altering the pigment’s purple-blue hue by the addition of a dark yellow binder.