mineral

Quartz Crystal with Inclusions

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: Colorless/transparent with dark brown/black inclusions; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Colorless/transparent with dark brown/black inclusions
Luster: Vitreous (glassy)

Identified April 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids cooled and crystallized in veins or cavities. This specimen shows inclusions of other minerals (likely iron oxides like hematite or goethite) trapped during growth.

Uses & applications

Used primarily for crystal collecting, metaphysical purposes, and jewelry. Industrial clear quartz is used in electronics and optics due to piezoelectric properties.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Specimens like this one, with visible phantom growths or internal inclusions, are highly prized by collectors as time capsules of geological history.

Field identification & locations

Identify by its hardness (scratches glass), glass-like luster, and lack of true cleavage planes. Often found in pegmatites, hydrothermal veins, and sedimentary river beds.

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