Crucifixion of Christ, icon, Composition of Mary’s face: (0) wooden support, [1] white ground layer, [2] yellowish green underpainting, [3] dark green shadows, [4] ochre shadow (eyelids, nose), [5] white lighted areas (in several layers), [6] pink stresses, [7] dark pink stresses, [8] green-brown lines, [9] red-brown lines, [10] black lines, [11] white highlights, [12] red glaze (lips and nose)