Obzvlá

Obzvlá is a rare, fictional mineral described in speculative geology literature. It was first identified in 2047 by a field team from the Veridia Geological Survey and named after the local mountain dialect where the first specimen was found. The mineral typically occurs as deep indigo to violet crystals with a glassy to pearly luster, though many collections consist of massive or botryoidal forms. The crystal system is reported as hexagonal, with prismatic to tabular habits; however, most natural specimens are poorly formed, which complicates precise structural analysis.

Physical properties reported for obzvlá include a Mohs hardness around 7.5 and a measured specific gravity near 4.3, with a relatively high refractive index and notable birefringence observed under polarized light. The chemical composition is described as a complex silicate rich in iron and titanium; exact empirical formula is not consistently determined due to limited samples.

Obzvlá forms in late-stage hydrothermal systems within granitic pegmatites, typically at moderate to high temperatures (roughly 250–400°C) and low pressures. It is commonly found alongside quartz, cassiterite, beryl, and tourmaline. The occurrence is highly restricted, leading to its status as a collector's mineral and a subject of ongoing mineralogical study.

In jewelry and research contexts, obzvlá is valued for its vivid coloration and potential optical properties. As a fictional mineral, its use remains hypothetical, and no commercial mining is known to exist outside fiction.