mineral

Quartz (Druzy on Matrix)

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless to white crystals with tan/buff matrix; Luster: Vitreous (glassy); Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless to white crystals with tan/buff matrix
Luster: Vitreous (glassy)

Identified April 11, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids cooled in rock cavities (geodes or veins). This specific piece shows a druzy coating of small crystals on a host rock, likely sedimentary or volcanic in origin.

Uses & applications

Primarily used for mineral collecting, lapidary work, and sometimes in jewelry as druzy pendants. Industrial quartz is used in electronics (oscillators) and glassmaking.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Druzy refers to a coating of tiny crystals on a rock surface that Sparkles like sugar.

Field identification & locations

Identify in the field by its hardness (it will scratch glass) and crystal habit. Common worldwide, especially in areas with volcanic activity or limestone caverns. For collectors, look for the 'sparkle' effect under light.