Art Deco vase by CRISTALLERIES DE NANCY; France, ca. 1925.Acid-etched cameo glass.Limited edition, copy 15/100.With mark on the base.Measurements: 34 x 15 cm.Vase of classic profile, with rounded foot, circular and low, stylized flared tank, narrow and high, which opens at the top to form the mouth. It is made using the cameo glass technique, combining an upper layer of shiny emerald glass, for the flower and bird motifs of synthesized design, and a lower layer of white opal glass. Unlike Art Nouveau cameo glass, the motifs are worked on two planes, that is, in silhouette and without details in relief, and are contained in a central strip, flanked by decorative borders, in a classicist, orderly composition, very different from the open and asymmetrical, oriental-influenced, typical of modernism.The cameo glass is a technique known since ancient times, although resumed in Europe in the late nineteenth century. The main innovation will be the use of hydrofluoric acid instead of carving, which will allow a wider dissemination and cheaper production. The technique consists of blowing a bubble of two or more layers of glass of different colors, which are then carved or removed to acid remelting the bottom, thus leaving the motif in relief, in the color of the top layer of glass.