Intaglio Depicting a Theater Mask, Roman. Intaglio: 1st century. Setting: date unknown (modern). Intaglio: gemstone Setting: gold, 1.5 × 2 × 2.1 cm. Art Institute of Chicago, Bequest of Janis H. Palmer, 1986.908.

Engraved or carved gemstones (intaglios) were commonly incorporated into signet rings and could be pressed into wax or clay to function as a personal or official seal. The resulting impression created an image in relief that was the reverse of the carving. The many examples of engraved gems that survive today reflect a broad range of subjects and levels of artistic skill, which varied depending on the owner’s taste and financial means.