mineral

Colorless quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Small, transparent-to-translucent, glassy fragment with irregular fracture and possible crystal faces. Mohs hardness 7; vitreous luster; no cleavage; hexagonal crystal system; specific gravity about 2.65.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed in hydrothermal veins or cavities in igneous/metamorphic rocks, or weathered from quartz-rich material. The image cannot establish its geological age or whether it is natural versus cut glass; faceted-looking surfaces may indicate a processed fragment.

Uses & applications

Quartz is used in glass, electronics, abrasives, foundry materials, and decorative specimens. This tiny piece has little commercial value unless confirmed as a quality gemstone.

Geological facts

Quartz commonly produces sharp conchoidal fractures and may appear brilliantly bright under flash. Colorless quartz is called rock crystal; similar-looking man-made glass is softer and may show bubbles or rounded flow marks.

Field identification & locations

At approximately 25.7°N, 100.3°W near Monterrey, quartz-bearing veins and quartz-rich sedimentary rocks are regionally plausible. Test cautiously with a steel file or glass: quartz should scratch glass and resist steel; a gemological test is needed to distinguish it from glass.