mineral

Quartz (Specifically Clear to Smoky Quartz point)

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale. Color: Transparent to translucent, slightly yellow/smoky tint. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Transparent to translucent, slightly yellow/smoky tint
Luster: Vitreous (glassy)

Identified March 13, 2026More mineral →

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Physical properties

Formation & geological history

Formed from silica-rich hydrothermal solutions cooling at depth or within pegmatites. It can occur in almost any geological environment but typically crystallizes from magma or settles out of hot water in veins.

Uses & applications

Used in electronics (as piezoelectric crystal), glass manufacturing, abrasives, and as semi-precious gemstones in jewelry or for decorative/metaphysical collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is chemically very stable and resistant to weathering. This specific specimen shows a terminated crystal point with some host rock (matrix) attached.

Field identification & locations

Identify in the field by its hardness (will scratch glass easily), lack of cleavage, and hexagonal crystal habit. Common worldwide, with huge deposits in Brazil, Arkansas (USA), and Madagascar. Look for the distinct six-sided prismatic shape.

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