Yiwus
Yiwus is a fictional mineral described in speculative fiction and worldbuilding materials. It is a rare silicate mineral noted for its blue luminescence and high thermal stability, properties that have made it a subject of study in in-world geology and technology.
Etymology and naming: The name derives from the Eldrian language, where yiwus roughly means light-stone.
Discovery and classification: First described in 2149 by expedition leader J. K. Aram during surveys of Eldoria's
Physical properties: Crystals are typically prismatic, colorless to blue; Mohs hardness 6–7; refractive index around 1.75;
Occurrence and distribution: In the fictional world, Yiwus is found mainly in hydrothermal veins within basaltic
Applications and cultural significance: Yiwus is sought for photonic devices, high-temperature sensors, and jewelry in in-world