mineral
Quartz Druzy
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs scale), Color: Clear to white/off-white, Luster: Vitreous to Adamantine, Crystal Structure: Trigonal (hexagonal prisms), Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Identified More mineral →
Explore Quartz Druzy in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 7 (Mohs scale), Color: Clear to white/off-white, Luster: Vitreous to Adamantine, Crystal Structure: Trigonal (hexagonal prisms), Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Formed via hydrothermal precipitation where silica-rich fluids deposit tiny crystals in rock cavities or fractures. Common in vugs of sedimentary rocks like limestone or volcanic geodes.
Uses & applications
Primarily used in jewelry (as pendants or earrings), metaphysical collections, and as decorative mineral specimens.
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, creating a 'sugar-coated' or 'glitter' effect due to the many tiny crystal facets reflecting light.
Field identification & locations
Identified by its signature sparkling 'sugary' appearance and high hardness (it can scratch glass). Commonly found in geodes or lining the walls of veins in various geological environments.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous