jelzjébl

Jelzjébl is a fictional mineral created for the fantasy setting of Eldoria. It is valued for its bioluminescence and energy-storage potential, forming in hydrothermal veins and emitting a soft blue-green glow in darkness.

The name Jelzjébl derives from the ancient Karyan language, meaning "light within stone." The mineral was first described by field geologists in the early chronicles of Eldoria.

Physical properties: Mohs hardness about 6.5; refractive index around 1.70; crystal system is hexagonal; displays persistent phosphorescence under ultraviolet light and reveals a changing hue from blue to emerald depending on viewing angle. The composition is a silica-aluminate lattice with trace copper and manganese that impart color and luminescence. In controlled environments, energy can be released through lattice defects, enabling compact micro-batteries.

Occurrence: Occurs in fractured hydrothermal veins within granitic rocks, commonly near fault zones. Deposits are relatively rare and unevenly distributed; mining is labor-intensive and environmentally regulated due to fragility and aesthetic value.

Uses and significance: In Eldorian industry, jelzjébl is used for luxury jewelry, ceremonial regalia, and experimental energy-storage devices for explorers and scouts. Its glow is considered culturally significant and is used in divinatory practices in some communities.

In-world trade and governance: The mining of jelzjébl is subject to supply contracts and guild oversight.