mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Yellow, golden-yellow; Luster: Vitreous (glassy); Crystal structure: Trigonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: Yellow, golden-yellow
Luster: Vitreous (glassy)

Identified August 1, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Yellow, golden-yellow; Luster: Vitreous (glassy); Crystal structure: Trigonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Formation & geological history

Forms in hydrothermal veins, pegmatites, and sedimentary environments through the crystallization of silica-rich solutions under varying temperatures and pressures.

Uses & applications

Used in jewelry, tumbling, decorative objects, crystal healing, and metaphysical practices.

Geological facts

Yellow coloration in quartz is often due to the presence of finely dispersed iron oxide or hydroxide inclusions, such as goethite or limonite, within the quartz matrix.

Field identification & locations

Can be identified by its conchoidal fracture, lack of cleavage, hardness of 7 (scratches glass), and distinct yellow color. Found globally, especially in Brazil, Madagascar, and the United States.