Game concept · The Royal Court
Court Artifact
The game also links it as Court Artifacts.
From the game's encyclopedia
A Court Artifact is an Artifact that is put on display in a Ruler's Royal Court, such as tapestries or beautifully illustrated books.
Court Artifacts are one factor determining the Court Grandeur of a Royal Court.
There is no limit to how many Artifacts a Character can have, but only those displayed in a slot of its type has any effect.
You can create new Court Artifacts from Inspired Characters, from the Commission Artifact Decision, or from choosing to Reforge an Inventory Artifact
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Court Artifact is an entry of Crusader Kings III's in-game encyclopedia (The Royal Court). The game explains it: "A Court Artifact is an Artifact that is put on display in a Ruler's Royal Court, such as tapestries or beautifully illustrated books." It is part of Artifact. The game also links it as Court Artifacts. Patch 1.20.1.2, from game/common/game_concepts/01_ep1_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/01_ep1_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.