Ydinosan

Ydinosan is a fictional mineral described in speculative fiction and collaborative world-building projects. It does not exist in the real world, and there are no verified scientific measurements or properties.

In fictional depictions, ydinosan is a dense, crystalline substance with a glassy luster. Colors range from colorless to pale blue or green, depending on impurities. It is often portrayed as highly stable under extreme temperatures and pressures.

In-universe geology suggests ydinosan forms in high-grade metamorphic environments or inside certain parent rocks where unusual diffusion processes occur. Some stories place it in meteorites or on distant planetary bodies, suggesting a cosmochemical origin.

The material is commonly described as having a high refractive index and a wide band gap, making it useful for optics and advanced electronics in fiction. It is also depicted as chemically inert and resistant to corrosion, properties that contribute to its rarity and value in trade.

Because ydinosan is fictional, references are limited to in-universe texts and fan-created compendia rather than peer-reviewed science.