Mosaics are employed to decorate the spandrils of the arches.
Other notable examples of this style are the Palazzo Ariani at San Raffaelle, with its handsome window in a design of intersecting circles; the beautiful window with the symbols of the four Evangelists in the spandrils, in the facade of a house at San Stae; the row of three Giustinian palaces at S.
All the spandrils of the Taj, all the angles and more important architectural details, are heightened by being inlaid with precious stones such as agates, bloodstones, jaspers and the like.
The inner face .of the arches, with the spandrils and the pilasters which support them, are covered with flowers and foliage of delicate design and dainty execution, crusted in green serpentine, blue lapis lazuli and red and purple porphyry.
The conventional foliage decorating the capitals is of great beauty and variety, and extends to spandrils, bosses, &c. In the spandrils of the arches of the nave, transept or choir arcades, diaper work is occasionally found, as in the transept of Westminster Abbey.