mineral

Quartz with Matrix

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale. Color: Translucent white to pale pink/translucent quartz with brownish-grey matrix inclusions. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific Gravity: ~2.65.

Hardness: 7 on Mohs scale
Luster: Vitreous (glassy)

Identified July 22, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in a wide variety of geological environments, including igneous pegmatites, hydrothermal veins, and metamorphic rocks. It crystallizes as silica-rich fluids cool and precipitate within cavities and fractures.

Uses & applications

Commonly collected by mineral enthusiasts, used in lapidary arts, decorative items, and historically in various industrial application due to its hardness and physical stability.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust, after feldspar. It comes in many variety colors such as amethyst, citrine, rose quartz, and smoky quartz.

Field identification & locations

Identified by its ability to easily scratch glass (Mohs hardness 7), lack of cleavage, glassy luster, and typical hexagonal crystal faces or irregular crystalline masses. Widely found around the world in granite pegmatites and quartz veins.