mineral

Quartz Pebble with Mineral Inclusions

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness 7 on the Mohs scale, vitreous to greasy luster, trigonal crystal system, white to grey color with dark vein-like inclusions, no distinct cleavage, Conchoidal fracture.

Identified July 22, 2026More mineral →

Explore Quartz Pebble with Mineral Inclusions 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 the Mohs scale, vitreous to greasy luster, trigonal crystal system, white to grey color with dark vein-like inclusions, no distinct cleavage, Conchoidal fracture.

Formation & geological history

Formed through hydrothermal activity where silica-rich fluids cooled and crystallized in veins within host rocks. Later eroded by water action into a smooth, rounded beach pebble.

Uses & applications

Commonly collected by beachcombers, used as decorative river stones, or used as raw material for lapidary and gemstone polishing.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Rounded beach pebbles like this undergo thousands of years of natural water erosion to achieve their smooth texture.

Field identification & locations

Identified by its high hardness (scratches glass), waxy to glassy luster, white/translucent body, and dark carbonaceous or metallic mineral veins running through it. Commonly found along riverbeds, coastlines, and gravel deposits.