mineral
Pink-and-white quartz-rich pebble
Quartz (SiO₂), likely massive quartz with iron-oxide staining and possible feldspar inclusions
AI-generated identification · may be incorrectHardness about 7 Mohs; white to pale pink, translucent to opaque, with a dull-to-glassy luster and no obvious cleavage. The rounded shape indicates natural water wear or tumbling; exact identification is limited without tests.
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Physical properties
Hardness about 7 Mohs; white to pale pink, translucent to opaque, with a dull-to-glassy luster and no obvious cleavage. The rounded shape indicates natural water wear or tumbling; exact identification is limited without tests.
Formation & geological history
Likely formed in a quartz-rich igneous or metamorphic rock and later released by weathering and rounded in a stream or shoreline environment. Quartz commonly formed during Precambrian to younger geological events, depending on its source rock.
Uses & applications
Suitable as a decorative or teaching specimen, landscaping stone, or lapidary material; low-grade pieces are generally not used for jewelry.
Geological facts
Pink coloration may result from microscopic iron, inclusions, or radiation-related defects; reddish patches may be iron oxides or altered feldspar. A steel file should not scratch quartz, while quartz can scratch glass.
Field identification & locations
Common in river gravels and quartz veins worldwide, especially regions with granite or metamorphic bedrock. Confirm with a hardness test, glass-scratch test, and streak/powder examination; acid testing is unnecessary.
