asulle
Asulle is a term used in fantasy fiction and role-playing games to designate a mineral with distinctive luminous properties, as well as a related ritual practice in certain settings. In many worlds, asulle refers to a translucent crystal vein that glows faintly in darkness, especially under moonlight, and is prized for both its beauty and its magical associations.
In-world properties and uses: The crystal is typically brittle and requires careful handling. When incorporated into
Extraction and culture: Mines or caverns said to yield asulle are often depicted as remote and guarded
Reception and usage in media: Asulle functions as a worldbuilding element that appears across fantasy novels,