mineral

Quartz Druzy / Quartz Crystal Cluster

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: Clear to light yellowish-tan/brownish due to iron oxide staining. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture).

Hardness: 7 on Mohs scale
Luster: Vitreous (glassy)

Identified July 28, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids cooled and precipitated quartz crystals in cavities, fractures, or geodes within sedimentary, metamorphic, or igneous rocks.

Uses & applications

Widely used as mineral specimens for rock collectors, home decor, metaphysical practices, and occasionally crushed for industrial silica extraction or cut into gemstones.

Geological facts

Quartz is one of the most abundant minerals on Earth's surface. Druzy quartz coatings consist of tiny, sparkling quartz crystals coating a rock surface or geode cavity wall.

Field identification & locations

Identify in the field by its hardness (scratches glass readily), hexagonal prismatic crystal habits, glassy luster, and lack of true cleavage. Commonly found worldwide in granitic pegmatites, quartz veins, and limestone geodes.