mineral

Natural quartz crystal cluster / massive quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Appears to be translucent, pale honey-colored quartz with glassy luster and irregular crystal faces, fractures, and possible iron-oxide staining. Mohs hardness 7; trigonal crystal system; no cleavage, conchoidal fracture; specific gravity about 2.65.

Identified September 22, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids, pegmatites, or cavities in igneous and metamorphic rocks; the yellow coloration may reflect iron staining or inclusions. Exact age and locality cannot be determined from the photograph.

Uses & applications

Used for glass, electronics, abrasives, countertops, and construction aggregate; attractive transparent pieces are sold as display minerals or occasionally cut as gemstones.

Geological facts

Quartz is one of Earth’s most abundant minerals and is commonly mistaken for calcite or glass. True quartz resists scratching by a steel knife, though surface coatings or inclusions can affect testing.

Field identification & locations

Look for glassy luster, hardness, conchoidal fracture, and lack of cleavage; quartz commonly occurs in veins, pegmatites, and geodes worldwide. Likely localities include Brazil, Madagascar, the United States, and China.