Quartz Geode

Physical Properties

Hardness: 7 on Mohs scale; Color: White to translucent; Luster: Vitreous to dull; Crystal structure: Trigonal (hexagonal prisms); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Formation & Geological History

Formed in cavities within volcanic or sedimentary rocks where mineral-rich groundwater deposits silica over thousands of years. Usually found in desert environments or volcanic ash deposits.

Uses & Applications

Used extensively in jewelry, decorative ornaments, crystal healing collections, and as educational specimens.

Geological Facts

Geodes are like nature's 'surprise eggs'; their drab exterior hides beautiful crystals inside. This specimen appears to be a small 'cracker' geode, common in Moroccan deposits.

Field Identification & Locations

Identify by looking for a rounded, nodular exterior that feels lighter than a solid rock of the same size. Finding them in the field often involves looking for 'potato-like' rocks in known volcanic or limestone areas.

Identified on: 5/18/2026

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