mineral

Quartz crystal cluster

Quartz (SiO₂), likely milky to pale honey-colored macrocrystalline quartz

AI-generated identification · may be incorrect

Mohs hardness 7; translucent cream-to-honey color with a vitreous luster and hexagonal crystal structure. Quartz has no true cleavage and commonly breaks with conchoidal fracture; individual crystals show six-sided prisms and pyramidal tips.

Identified October 16, 2026More mineral →

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Physical properties

Formation & geological history

Formed as silica-rich fluids cooled in fractures or cavities, commonly in hydrothermal veins or pegmatites. Quartz occurs in rocks of many ages; the specimen’s age and exact origin cannot be determined from the image.

Uses & applications

Quartz is widely used in glass, electronics, and construction; attractive crystal clusters are collected and displayed.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch glass, and hexagonal crystal points; this cluster appears naturally formed, though its exact locality is unknown. Common worldwide, including Brazil, Madagascar, and the United States.