plique-à-jour, (French: “open to light”), in the decorative arts, technique producing translucent enamels held in an open framework made by soldering individual wires or delicate metal strips to each other, rather than to a supporting surface as in cloisonné. The unattached support, usually a sheet of metal or mica, can be easily removed after the enamels have been annealed and cooled, producing an effect not unlike a stained-glass window in miniature. Developed in France and Italy in the 14th century, this technique has been used largely for making vessels, jewelry, and, in Russia, demitasse spoons.