mineral

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Colorless to pale bluish, transparent, and vitreous; hardness 7 Mohs, specific gravity about 2.65, hexagonal crystal structure, and no true cleavage. The rounded faceted appearance suggests a cut gemstone rather than a natural crystal; image quality prevents confirming whether it is quartz or glass.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Natural quartz forms in igneous and hydrothermal veins, pegmatites, and sedimentary cavities over varied geological ages. Cut specimens are shaped from mined quartz; synthetic or glass imitations may be human-made.

Uses & applications

Used in jewelry, ornaments, abrasives, electronics, and optical instruments; faceted quartz is an inexpensive gemstone. Natural collectible crystals may command more than ordinary cut material.

Geological facts

Quartz commonly shows conchoidal fracture and can scratch ordinary glass. A refractive-index or hardness test is needed to distinguish it reliably from glass or synthetic material.

Field identification & locations

Common sources include Brazil, Madagascar, the United States, and the Alps. Check for natural crystal faces, inclusions, bubbles, double refraction, and hardness; glass often contains bubbles and cannot scratch quartz.