Cameo glass plaque. England, George Woodall, 1898. D. 46.3 cm. (click image to enlarge in a new window) Glass of one layer covered, usually by casing, with one or more layers of contrasting color(s). The outer layers are acid-etched, carved, cut, or engraved to produce a design that stands out from the background. The first cameo glasses were made by the ancient Romans. The genre was revived in England a nd, to a lesser extent, in America in the late 19th century.