Definition: a type of enameling, in which translucent enamels are fitted into a pattern created by an open lattice of thin metal wires; because the latticework has no backing (unlike cloisonné), light can shine through the enameled design, creating the effect of a stained-glass window; developed during the Renaissance - Cellini created many pieces - the technique was rediscovered in the mid-19th century (Russian craftsmen used it in tableware), and is highly typical of jewelry made by Lalique and other Art Nouveau designers
Pronunciation: pleek-ah-jur
Example: When held up to the light, the yellow plique-à-jour butterfly brooch didn't really sparkle, but rather glowed like a tiny sun.