mineral

Quartz Druzy (Geode Fragment)

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: White to colorless; Luster: Vitreous/Glassy; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: White to colorless
Luster: Vitreous/Glassy

Identified July 5, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: White to colorless; Luster: Vitreous/Glassy; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal fluids precipitating inside rock cavities (vugs) or gas bubbles in volcanic rock. These specimens can range from millions to hundreds of millions of years old.

Uses & applications

Commonly used in jewelry (as druzy pendants), decorative home decor, and as educational specimens for crystal healing and mineral collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Small crystal clusters like this are referred to as 'druzy' quartz because they look like sugar dust.

Field identification & locations

Identify in the field by its hardness (it will scratch glass) and its crystalline habit. Common locations include Brazil, Uruguay, and the Midwestern United States (Keokuk geodes).