Quartz
Quartz (Silicon Dioxide) · Mineral Specimen
Crystal System
Trigonal, forming massive or rounded pebble habits
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2
Formation Process
Sedimentary and weathering processes, typically resulting from the breakdown of igneous or metamorphic rocks
About This Crystal
A small, rounded, off-white to pale yellowish pebble with a smooth, water-worn exterior and a translucent to semi-translucent appearance with minor surface pitting
Physical Characteristics
White streak, conchoidal fracture, lack of distinct cleavage, specific gravity around 2.65, brittle tenacity
Optical Properties
Singly refractive or weakly doubly refractive with uniaxial positive optical character
Hardness & Durability
Origin Region
Found globally in riverbeds, alluvial deposits, and weathering environments
Hardness & Durability
Mohs hardness of 7, excellent durability and high resistance to scratching and environmental wear
Care & Maintenance
Can be safely cleaned with warm soapy water; resistant to most household chemicals and stable in sunlight
Rarity & Value
Very common worldwide, low commercial value unless cut and polished as a gemstone
Special Characteristics
Displays natural tumbling from water erosion and minor iron-staining inclusions
Lore & History
Often associated with clarity, amplification of energy, and focus in modern crystal lore, though without scientific backing