mineral

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; colorless to faintly smoky, transparent, with vitreous luster and a trigonal crystal structure. The rounded form is polished rather than naturally crystallized, and internal bubbles or inclusions may be visible.

Identified August 12, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in igneous, metamorphic, and hydrothermal environments when silica-rich fluids or melts crystallize; deposits range from ancient Precambrian rocks to recent veins. This specimen has been cut and polished into a sphere.

Uses & applications

Used as a decorative, metaphysical, and lapidary object; quartz is also important in glass, electronics, abrasives, and precision oscillators. A small polished sphere typically has modest retail value.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure. Clear quartz is often called rock crystal.

Field identification & locations

Identify by its glassy luster, excellent transparency, lack of cleavage, and ability to scratch ordinary glass; it should not be confused with man-made glass, which is generally softer and may show bubbles. Common sources include Brazil, Madagascar, the United States, and China.