zmera

Zmera is a fictional mineral species described in speculative geology and worldbuilding contexts. It is presented as a rare hydrated phosphate-silicate mineral that forms in pegmatitic and hydrothermal veins. The name appears in online worldbuilding communities as part of a family of minerals created for storytelling and game design.

Zmera crystals are typically colorless to violet, with a vitreous to pearly luster. They form elongated prismatic crystals and occur most often in granular aggregates. It has a Mohs hardness of 5.5–6 and a specific gravity around 3.2–3.6. The refractive index is approximately 1.65–1.70.

In the fictional setting, zmera is reported from pegmatites and late-stage hydrothermal veins within the Zmera Basin on the continent of Vespera. It is commonly associated with quartz, feldspar, amblygonite, and rare-earth-bearing minerals.

The mineral is named after the Zmera Mountains, the region where the first specimens were described. In the in-world language, zmera is said to mean 'bright stone'.

Applications and cultural significance: In stories and games, zmera is valued as a gemstone for jewelry because of its color and clarity. In some devices in worldbuilding, it is claimed to have piezoelectric or photoluminescent properties, enabling small energy storage or display applications; these properties are speculative within the fictional framework.

Zmera is placed in hypothetical mineral groups within the narrative taxonomy, sometimes described as a phosphate-silicate, sometimes a hydrous silicate; the exact chemistry varies by author.