Quartz
Quartz (Silicon Dioxide) · Mineral Specimen / Semi-Precious
Crystal System
Trigonal, typically forming prismatic crystals or rounded pebble forms in alluvial environments
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Igneous, metamorphic, and sedimentary processes; commonly crystallizes from silica-rich hydrothermal solutions
About This Crystal
Small, tumbled or water-worn pebble showing translucent to opaque greyish-white and bluish tones with a vitreous to waxy luster
Physical Characteristics
Color ranges from colorless to white, grey, or light blue; streak is white; conchoidal fracture; specific gravity around 2.65; no true cleavage
Optical Properties
Singly refractive or uniaxial positive with low birefringence; vitreous luster
Hardness & Durability
Origin Region
Found globally; notable deposits in Brazil, USA, Madagascar, and the Alps
Hardness & Durability
Mohs hardness of 7; good durability and toughness, making it resistant to scratching
Care & Maintenance
Clean with warm soapy water; safe for mechanical cleaning; store separately to avoid scratching softer materials
Rarity & Value
Common; widely available at very affordable prices
Special Characteristics
Piezoelectric properties; common presence of micro-inclusions
Lore & History
Historically used in ancient jewelry, talismans, and tools; associated in modern metaphysical practices with clarity, energy amplification, and balancing all chakras (traditional beliefs)