mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale, Color: White to off-white, Luster: Vitreous to dull due to weathering, Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65

Identified July 31, 2026More mineral →

Explore Quartz Pebble in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 7 on Mohs scale, Color: White to off-white, Luster: Vitreous to dull due to weathering, Crystal Structure: Trigonal, Cleavage: None, Specific Gravity: 2.65

Formation & geological history

Forms primarily in hydrothermal veins and igneous, metamorphic, and sedimentary rocks. This specimen is a weathered, water-worn pebble found in a sedimentary or alluvial environment.

Uses & applications

Used in landscaping, decorative aggregates, glassmaking, electronics, and lapidary work.

Geological facts

Quartz is one of the most abundant and durable minerals in the Earth's continental crust, highly resistant to both chemical and mechanical weathering.

Field identification & locations

Can be identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture. Common worldwide in riverbeds, beaches, and gravel deposits.