Quartz Druzy Geode Fragment

Physical Properties

Hardness: 7 (Mohs scale); Color: Brownish to clear/white; Luster: Vitreous; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & Geological History

Formed through the precipitation of silica-rich hydrothermal fluids in hollow cavities within volcanic or sedimentary rocks. The tiny crystals (druzy) grow over thousands of years as the solution cools or evaporates.

Uses & Applications

Used primarily for metaphysical collecting, decorative lapidary arts, and as inexpensive mineral specimens for jewelry or educational purposes.

Geological Facts

The word 'Druzy' refers to the coating of fine crystals on a rock surface. These specific brown tones are often caused by iron oxide (limonite) staining or inclusions within the quartz structure.

Field Identification & Locations

Identify by its 'sparkling sugar' appearance and high hardness (it will scratch glass). Commonly found in riverbeds or limestone deposits where silica groundwater has been active.

Identified on: 4/19/2026

Mode: Standard