Quartz Pebble
Quartz (Silicon Dioxide) · Mineral Specimen
Crystal System
Trigonal, massive or rounded pebble habit due to weathering and water transport
Mineral Group
Silicate, Tectosilicate subgroup
Chemical Formula
SiO2
Formation Process
Sedimentary weathering and erosion, transportation by water resulting in rounded pebble forms
About This Crystal
Small, weathered, opaque to translucent pale yellowish-white pebble with a smooth, water-worn surface texture and earthy undertones
Physical Characteristics
Color: Pale yellow to off-white; Streak: White; Cleavage: None; Fracture: Conchoidal; Specific Gravity: 2.65; Tenacity: Brittle
Optical Properties
Refractive Index: 1.544-1.553, Birefringence: 0.009, Uniaxial positive, Isotropic or weakly doubly refractive in aggregate forms
Hardness & Durability
Origin Region
Found worldwide in alluvial deposits, riverbeds, and sedimentary environments
Hardness & Durability
Mohs hardness of 7, excellent durability with no cleavage making it highly resistant to scratching and wear
Care & Maintenance
Clean with warm soapy water and a soft brush; highly durable and chemically inert, safe from most household chemicals and sunlight
Rarity & Value
Extremely common worldwide, minimal monetary value as a raw pebble specimen
Special Characteristics
Piezoelectric and pyroelectric properties under specific mechanical stress or temperature changes
Lore & History
Quartz has been used since prehistoric times for tools and ornamentation. Metaphysically associated with clarity, energy amplification, and balancing all chakras, though these are traditional beliefs rather than scientific claims