mineral

Quartz (Smoky/Rose Quartz Pebble)

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: Translucent brownish-pink to tan. Luster: Vitreous to waxy. Fracture: Conchoidal. Crystal system: Trigonal. Specific gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Translucent brownish-pink to tan
Luster: Vitreous to waxy

Identified July 24, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale. Color: Translucent brownish-pink to tan. Luster: Vitreous to waxy. Fracture: Conchoidal. Crystal system: Trigonal. Specific gravity: 2.65.

Formation & geological history

Formed in igneous pegmatites and hydrothermal veins, subsequently weathered and water-worn into a pebble within stream deposits or gravel beds.

Uses & applications

Used primarily for lapidary work, gemstone carving, mineral collecting, and historical gemstone jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Stream-rounded quartz pebbles often retain internal clarity despite a worn, abraded surface.

Field identification & locations

Identify in the field by its scratch resistance to steel (hardness 7), lack of cleavage, and conchoidal fracture pattern on fresh surfaces. Abundant in gravels and riverbeds worldwide.