Quartz Pebble
Quartz var. Common Quartz · Mineral Specimen / Common Pebble
Crystal System
Trigonal, massive or tumbled habit
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Sedimentary deposition, water transport, and mechanical weathering
About This Crystal
A small, rounded, whitish-grey pebble resting on a patterned carpet. The specimen is opaque to translucent with a worn, smooth surface resulting from aqueous transport and tumbling.
Physical Characteristics
Color is white to off-white, streak is white, cleavage is absent, fracture is conchoidal, specific gravity is approximately 2.65, tenacity is brittle.
Optical Properties
Refractive index ranges from 1.544 to 1.553, uniaxial positive, doubly refractive.
Hardness & Durability
Origin Region
Worldwide, often found in alluvial deposits, riverbeds, and beaches
Hardness & Durability
Mohs hardness of 7, excellent durability with no cleavage planes, highly resistant to scratching.
Care & Maintenance
Can be cleaned safely with warm soapy water and a soft brush; resistant to most household chemicals and sunlight.
Rarity & Value
Extremely common worldwide with negligible commercial value as a tumbled pebble.
Special Characteristics
None notable beyond typical physical properties of common weathered quartz.
Lore & History
Historically used across many cultures simply as a tool, gaming piece, or decorative stone. In modern crystal healing, quartz is considered a master healer stone associated with all chakras.