Solukko

Solukko is a term used in fictional and speculative fiction settings to denote a mineral with luminous and energy-storage properties. In many world-building contexts, solukko is described as a lightweight crystalline substance that absorbs light or solar energy and re-emits it as a steady glow or as usable electrical charge. Its energy density and durability make it a sought-after resource in stories featuring mining economies, frontier technology, and urban illumination.

In typical portrayals, solukko is mined from subterranean deposits or coastal sills, then refined into shards or pellets. Devices powered by solukko range from portable lamps to sensor arrays, with performance depending on crystal quality and processing. Because of its light-emitting nature, solukko is often associated with urban night lighting, ceremonial luminaries, or arcane rituals in fantasy settings.

The term is widely used across different fictional universes and may have alternative spellings, such as soluko or sulukko. Because solukko is not a real mineral, its properties and significance vary by author, though common themes include renewable energy, trade value, and symbolic resonance with light or renewal.

See also: fictional minerals, luminous minerals, energy storage materials.

This article concerns a fictional concept used in speculative fiction and world-building. Real-world minerals may share superficial similarities, but solukko is not an established scientific category.