mineral
Likely clear quartz fragment
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectSmall translucent, colorless shard with vitreous luster; quartz has Mohs hardness 7, hexagonal crystal structure, no true cleavage, and conchoidal fracture. The image is dim and low-resolution, so identification is tentative.
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Physical properties
Small translucent, colorless shard with vitreous luster; quartz has Mohs hardness 7, hexagonal crystal structure, no true cleavage, and conchoidal fracture. The image is dim and low-resolution, so identification is tentative.
Formation & geological history
Quartz crystallizes from silica-rich igneous or hydrothermal fluids and also occurs in metamorphic and sedimentary rocks; specimens may range from Precambrian to modern. This piece may be a broken or tumbled crystal rather than a natural matrix sample.
Uses & applications
Common quartz is used in glass, ceramics, abrasives, electronics, and countertops; clear attractive pieces are sold as inexpensive display or lapidary material.
Geological facts
Quartz commonly forms six-sided prismatic crystals and is abundant in Earth’s crust. It can be distinguished from glass by its greater hardness and lack of bubbles or perfectly smooth conchoidal surfaces.
Field identification & locations
Look for scratch resistance against ordinary steel, a glassy luster, and irregular conchoidal fracture; a hardness test or magnification would help exclude glass. Common worldwide, especially in hydrothermal veins, pegmatites, and quartz-rich sands.
