Ishiharalevyt

Ishiharalevyt is a fictional mineral species described in speculative geology and worldbuilding. It is a rare borosilicate silicate with a vitreous to adamantine luster and a pale green to amber color. In the imagined geology, it forms as prismatic crystals within high-grade metamorphic rocks and melts only under specific tectonic and hydrothermal conditions.

In the setting, Ishiharalevyt is primarily found in the Ishihara region of the continent of Valara. It occurs in small, irregular veinlets intergrown with garnet, kyanite, and staurolite, and is often concentrated near metamorphic fluid pathways.

Chemically, Ishiharalevyt is described as a complex borosilicate containing iron and magnesium, with trace rare earth elements. It typically has a Mohs hardness of 6.5 to 7 and a density around 3.2 to 3.6 g/cm3. The mineral displays a color range from pale green to honey-yellow and may exhibit weak pleochroism under polarized light.

The name Ishiharalevyt combines the fictional Ishihara region with the suffix -levyt, used in the setting for rare minerals. In the narrative world, Ishiharalevyt is sought for its unique optical properties and potential applications in high-temperature ceramics, optical devices, and energy storage research, though practical use remains speculative within the story's context.