diastaalset

Diastaalset is a fictional mineral described in speculative fiction and worldbuilding glossaries as a rare crystalline substance. The term appears in fantasy novels, gaming manuals, and fan wikis as a material with unusual properties, but it is not recognized in real geology or mineral science.

Description: Diastaalset typically forms elongated crystals with an iridescent blue-silver sheen. It has moderate density and a metallic luster; hardness is placed around 6 to 7 on the Mohs scale. The mineral is usually opaque, though thin fragments can be translucent.

Geology and genesis: In fiction, diastaalset forms in hydrothermal veins within subduction-zone metamorphic rocks, often alongside copper or tin minerals. Its formation is linked to high-pressure conditions and thaumic fluids in certain tectonic environments unique to the imagined world.

Properties and applications: Diastaalset is depicted as moderately conductive and capable of storing or channeling energy in magical or techno-magical systems. Cut facets or alloyed forms are said to stabilize energy flows and power compact arc lamps or enchanted devices.

Cultural context and depictions: The mineral is tied to myths of ancient engineers and is a common treasure in stories. Real deposits are described as rare, with fictional sites such as Shard Crag or Moonmist Vein noted in various narratives.

Note: As a fictional construct, diastaalset has no basis in empirical science outside of its use in stories and games.