mineral

Quartz (Rose Quartz / Quartz Pebble)

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: Pale pinkish-tan to beige. Luster: Vitreous to dull/waxy when weathered. Crystal structure: Hexagonal/trigonal. Cleavage: None (conchoidal to uneven fracture). Specific gravity: ~2.65.

Hardness: 7 on Mohs scale
Color: Pale pinkish-tan to beige
Luster: Vitreous to dull/waxy when weathered

Identified July 22, 2026More mineral →

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Physical properties

Formation & geological history

Formed in igneous pegmatites or hydrothermal veins where silica-rich fluids cool and crystallize. Over time, natural water erosion smooths the rock into a rounded river pebble.

Uses & applications

Used in lapidary work, decorative landscaping, mineral collecting, and as tumbling rough.

Geological facts

Natural stream action frequently shapes quartz pebbles into heart-like or ovoid forms. Pink hues in quartz are usually caused by microscopic trace inclusions of dumortierite or titanium/manganese impurities.

Field identification & locations

Identify by its hardness (scratches glass readily and cannot be scratched by steel) and lack of cleavage. Common in stream beds, beaches, and gravel pits worldwide.