Lusvli

Lusvli is a fictional mineral referenced in speculative geology and worldbuilding, described as a rare aluminosilicate with luminescent properties. In the in-world glossaries, lusvli is associated with high-temperature hydrothermal belts and regional metamorphism, where crystals are said to form under specific pressure and chemical conditions. The term is treated as a proper name within the fictional setting, derived from the Lusvli language of an imagined culture and commonly linked to light-bearingStone terminology in-world.

In-world etymology attributes the name to the Lusvli people, a fictional population in the imagined region where the mineral is found. The word is often interpreted within the lore as a compound of light and stone, reflecting its luminescent characteristics and crystalline nature.

Formation and occurrence are described as local to metamorphic belts, with lusvli crystallizing from hydrothermal fluids at crustal depths. In the lore, deposits are rare and occur in association with other rare minerals, making specimens valuable to collectors and researchers within the fictional universe. Physical properties attributed to lusvli include a blue-green to violet iridescence, a vitreous to sub-vitreous luster, and a Mohs hardness around 6.5–7. It is described as translucent to opaque, with notable photoluminescence under ultraviolet light and occasional weak piezoelectric or pyroelectric responses in laboratory settings within the story world.

Uses and significance are primarily speculative within the fiction, with proposed applications ranging from decorative jewelry to prototype energy storage and optoelectronic devices. The mineral’s rarity and imagined properties drive its role in worldbuilding narratives and fictional economies.

See also: mythstone, solstone, mythic minerals.