mineral

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Clear to white crystals on tan/brown host rock; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture.

Hardness: 7 on Mohs scale
Color: Clear to white crystals on tan/brown host rock
Luster: Vitreous to greasy

Identified July 7, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Clear to white crystals on tan/brown host rock; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture.

Formation & geological history

Formed via hydrothermal precipitation where silica-rich fluids cooled in cavities or vugs within host rock, often in sedimentary or volcanic environments.

Uses & applications

Commonly used for lapidary work, jewelry, and as decorative mineral specimens for collectors.

Geological facts

The term 'druzy' refers to a coating of fine crystals on a rock surface. Quartz is the most common mineral to form druzy coatings due to its abundance in the Earth's crust.

Field identification & locations

Identify by the tiny, glittering crystal faces that sparkle like sugar. Found globally in areas with previous volcanic or seismic activity that created rock fractures.