mineral

Druzy Quartz Geode Fragment

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Clear to yellowish-brown (iron stained); Luster: Vitreous/glassy; Structure: Hexagonal crystal system; Cleavage: None; Conchoidal fracture.

Hardness: 7 on Mohs scale
Color: Clear to yellowish-brown (iron stained)
Luster: Vitreous/glassy

Identified July 15, 2026More mineral →

Explore Druzy Quartz Geode Fragment in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 7 on Mohs scale; Color: Clear to yellowish-brown (iron stained); Luster: Vitreous/glassy; Structure: Hexagonal crystal system; Cleavage: None; Conchoidal fracture.

Formation & geological history

Formed through the precipitation of silica from geothermal fluids in volcanic vugs or sedimentary cavities. As the mineral-rich water cools or evaporates, tiny crystals grow on the cavity walls. This specimen likely dates from the Cenozoic to Mesozoic era.

Uses & applications

Primarily used for mineral collecting, lapidary arts, and metaphysical purposes. Larger, high-quality druzy specimens are often used in jewelry pendants.

Geological facts

The term 'druzy' refers to a coating of fine crystals on a rock surface. The yellow or orange tint in this specimen is caused by iron oxide (limonite or hematite) impurities during the crystallization process.

Field identification & locations

Identify in the field by its characteristic 'sparkle' under light and its ability to scratch glass. Commonly found in riverbeds or areas with volcanic history. Collectors should look for intact crystal terminations and contrasting matrix colors.