Liddicoat, Richard T., Jr. Gemological Institute of America, Los Angeles, California.
The name given to the type of carved gemstone in which the figure is engraved into the surface of the stone, rather than left in relief by cutting away the background, as in a cameo. Intaglios are almost as old as recorded history, for this type of carving was popular in ancient Egypt in the form of cylinders. The cylinder, as well as the more familiar form of intaglio, was popular for impressing seals on sealing wax. Intaglios have been carved in a variety of gem materials, including emerald, crystalline quartz, hematite, and the various forms of chalcedony. See also: Cameo; Gem
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