A Glyptotheca is a museum or collection of engraved gems, intaglios, and cameos. There are several synonyms that can be used to refer to such a museum or collection, including lapidary, gemstone museum, intaglio collection, and cameo gallery. A lapidary is a collection of gemstones that are sorted, cut, and polished, while a gemstone museum is a place that displays natural and polished gemstones. An intaglio collection is a collection of engraved gems, and a cameo gallery is a place where cameos, which are engraved gems with a raised image, are displayed. These synonyms provide alternative words that can be used to refer to the same type of museum or collection.