mineral
Quartz Pebble (Citrine/Iron-stained Quartz)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale; pale yellowish to amber translucent color; vitreous to waxy luster; trigonal crystal system; no cleavage with conchoidal fracture; specific gravity around 2.65.
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Physical properties
Hardness of 7 on Mohs scale; pale yellowish to amber translucent color; vitreous to waxy luster; trigonal crystal system; no cleavage with conchoidal fracture; specific gravity around 2.65.
Formation & geological history
Formed through crystallization in igneous or hydrothermal environments, then weathered, transported, and water-worn in riverbeds or beaches, with yellow tones resulting from trace iron impurities.
Uses & applications
Commonly collected as tumbled stones, landscaping gravel, or polished into simple decorative gems or cabochons.
Geological facts
Quartz is one of the most abundant minerals in the Earth's crust; water-rounded quartz pebbles are highly resistant to mechanical and chemical weathering.
Field identification & locations
Identify by its ability to scratch glass (Mohs 7), lack of cleavage, and smooth, rounded water-worn appearance. Frequently found along river banks, lake shores, and coastal beaches.
