mineral

Druzy Quartz

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: Clear to grayish-white; Luster: Vitreous/Glassy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Clear to grayish-white
Luster: Vitreous/Glassy

Identified February 17, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Clear to grayish-white; Luster: Vitreous/Glassy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed through the precipitation of silica-rich hydrothermal fluids or groundwater in cavities, geodes, or fractures. This process can occur over thousands of years and is common in various geological ages where mineral-rich water is present.

Uses & applications

Primarily used in jewelry making (pendants and beads), metaphysical collecting, and as ornamental display pieces. Pure quartz is also used industrially in glass making and electronics.

Geological facts

The term 'druzy' refers to the glittering effect of tiny crystals coating a rock surface. While most druzy is quartz, it can also form with other minerals like garnet or malachite. It is often dyed or titanium-coated in the commercial market to enhance its sparkle.

Field identification & locations

Identify in the field by its 'sugar-like' sparkling surface and high scratch resistance (it will easily scratch glass). Common in volcanic regions (geodes) or limestone pockets. Collectors should look for intact crystal terminations without bruising.