mineral

Quartz Druzy Geode

Silicon Dioxide (SiO2)

Hardness: 7 on the Mohs scale; Color: Colorless to white/pearly; Luster: Vitreous/Glassy; Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on the Mohs scale
Color: Colorless to white/pearly
Luster: Vitreous/Glassy

Identified February 19, 2026More mineral →

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Physical properties

Hardness: 7 on the Mohs scale; Color: Colorless to white/pearly; Luster: Vitreous/Glassy; Crystal Structure: Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Formation & geological history

Formed when mineral-rich hydrothermal fluids seep into voids in sedimentary or volcanic rock. Over millions of years, crystals precipitate onto the interior walls. These often range from the Cretaceous to more recent periods.

Uses & applications

Commonly used in jewelry (pendants, rings), home decor, and spiritual/metaphysical collecting. High-purity quartz is also essential for electronics and glassmaking.

Geological facts

The word 'druzy' refers to a coating of fine crystals on a rock surface. Quartz is one of the most abundant minerals in the Earth's crust and is known for its piezoelectric properties.

Field identification & locations

Identify by its 'sugar-coated' appearance and high hardness (it will scratch glass). Often found in limestone beds, volcanic ash deposits, or arid desert regions like the American Southwest and Morocco.