Quartz Pebble

Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, and specific gravity of 2.65.

Formed through crystallization in igneous, metamorphic, and sedimentary environments, often shaped into smooth pebbles by water transport in rivers or beaches over thousands of years.

Used in glass manufacturing, electronics, abrasives, decorative landscaping, and as a polished gemstone.

Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.

Identified by its high hardness (scratches glass), lack of cleavage, and resistance to chemical weathering; commonly found worldwide in riverbeds and coastal areas.