A Superb Grand Tour Ormolu Bronze and Pietra Dura Highly Decorative Framed Oval Form Plaque, of exceptional quality and Italian origin, opening to reveal a similar form Photo Frame, complete with original very ornate Ormolu Bronze framed easel with Greek Key detailing, early to mid-Nineteenth Century.
The technique first appeared in Rome in the 16th century. It reached it’s peak in Florence. Pietra dura items are generally crafted on green, white or black marble base stones. Typically the resulting panel is completely flat, but some examples have the image is in low relief.
Pietra dura is also different from mosaics because stones are mostly much larger and cut to a shape suiting their place in the image, not all of roughly equal size and shape as in mosaic. In pietra dura, the stones are not cemented together with grout, and works in pietra dura are often portable.