kezébl
Kezébl is a fictional mineral introduced in speculative geoscience and fantasy literature to describe a crystalline compound with unique luminescent properties. The term is derived from a synthesis of roots in the fictional languages of Xyrath and Teresian, where it roughly connotes “bright stone.” In-universe, kezébl forms in high-temperature hydrothermal systems within continental rift zones, typically presenting a prismatic habit and a glassy, iridescent surface. It has a Mohs hardness around 6 to 6.5 and a low thermal conductivity, but shows a pronounced afterglow when exposed to light, emitting a pale blue-green light for several hours. Its electronic structure includes a band gap near 1.8 eV, making it a candidate for photonic and optoelectronic applications within the setting’s technology.
The mineral’s discovery is attributed to a 5th-century explorer in the fictional region of Athera. In modern
Culturally, kezébl symbolizes knowledge and illumination. Placed on altars or worn by scholars, it is said to