Ubekendt, THM I 1823 Gorgoneion Production DateNo earlier than 30 BC - No later than 200 Type of Work / ObjectSignet Ring > Paste Gem Location Not on display Inventory NumberI1823 Catalogue NumberI1823 Catalogue Level / CollectionThorvaldsen's Collections > Collection of Gems (I) Additional Catalogue Information MaterialGlass Version / EditionGlass Cast Dimension Height 1.1 cm Width 1 cm Art Form / CraftStonemasonry / Stonecutting Culture / Period Roman > Imperial Period (27 BC - 476) Owner Thorvaldsens Museum Acquisition ModeBequest from Bertel Thorvaldsen Acquisition DateMarch 24, 1844 Permalinkhttps://kataloget.thorvaldsensmuseum.dk/en/I1823 Sources / Literature Poul Fossing: The Thorvaldsen Museum Catalogue of the Antique Engraved Gems and Cameos, 1929, 1111