Blasku

Blasku is a fictional mineral featured in fantasy and speculative fiction and in world-building contexts such as role-playing games. It is typically described as a translucent crystal that glows faintly in the dark, emitting a soft blue-green light. In many settings, blasku crystals are prized for both aesthetic appeal and symbolic value and are commonly mined in volcanic or volcanic-adjacent regions.

Formation and characteristics: Blasku is said to crystallize from hydrothermal fluids within basaltic rock. Crystals vary from millimeters to several centimeters in length; color ranges from colorless to pale blue or lavender, depending on trace elements. On the Mohs scale, hardness is usually listed around 6 to 7, with a vitreous luster. When exposed to ultraviolet light, blasku often glows more intensely, a property exploited by artisans and surveyors in fiction.

Occurrence and habitat: In fictional geographies, blasku is most often found in cave systems or vein deposits associated with volcanic arcs, particularly in basaltic lava flows. It is rarer in sedimentary environments.

Uses and cultural role: Blasku is used in jewelry, ceremonial objects, and decorative elements in various fantasy settings. In some lore, it is believed to have calming or memory-enhancing properties, though such claims are part of the fictional world. In game design, blasku can function as a trade good, a quest objective, or a crafting component for lamps, runes, or enchantments.