mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale), Color: Pale yellow to honey, Luster: Vitreous (glassy), Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Pale yellow to honey, Luster: Vitreous (glassy), Crystal Structure: Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Formed from silica-rich hydrothermal fluids or within igneous and metamorphic rocks. This specific specimen is a water-worn river pebble, likely millions of years old, shaped by alluvial erosion.
Uses & applications
Used in jewelry as semi-precious stones, in crystal healing practices, or as aquarium and garden decor.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. While many yellow quartz stones are called citrine, river pebbles like this usually owe their color to tiny iron oxide inclusions.
Field identification & locations
Identify in the field by its hardness (it will scratch glass) and its smooth, rounded shape if found in water-rich environments. Common in river beds and beaches worldwide.
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Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous