mineral
Clear quartz crystal (likely quartz bead/specimen)
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectMohs hardness 7; colorless and transparent with vitreous luster, hexagonal crystal structure, indistinct cleavage, conchoidal fracture, and specific gravity about 2.65. The small faceted form may be cut or polished rather than naturally crystallized.
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Physical properties
Mohs hardness 7; colorless and transparent with vitreous luster, hexagonal crystal structure, indistinct cleavage, conchoidal fracture, and specific gravity about 2.65. The small faceted form may be cut or polished rather than naturally crystallized.
Formation & geological history
Quartz forms in hydrothermal veins, igneous pegmatites, and sedimentary environments over a wide range of geological ages. Colorless quartz is widespread in Earth’s crust.
Uses & applications
Used for jewelry, ornamentation, glass, electronics, and oscillator technology; clear faceted pieces may have modest gemstone value.
Geological facts
Quartz is one of the most abundant minerals and produces a strong scratch resistance compared with ordinary glass. Natural crystals commonly show six-sided prisms and pyramidal terminations.
Field identification & locations
Identify by glassy luster, transparency, hardness, and lack of cleavage; quartz will scratch glass, though similar clear glass may not. Common sources include Brazil, Madagascar, the United States, and China.
