Quartz
Quartz (Silicon Dioxide) · Mineral Specimen
Crystal System
Trigonal, massive or crystalline habit
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2
Formation Process
Igneous, metamorphic, and sedimentary processes
About This Crystal
An opaque to translucent whitish-gray rough crystalline rock specimen with earthy matrix
Physical Characteristics
White to gray body color, white streak, conchoidal fracture, no distinct cleavage, specific gravity around 2.65
Optical Properties
Uniaxial positive, vitreous to greasy luster on fresh surfaces
Hardness & Durability
Origin Region
Worldwide, common in various geological environments
Hardness & Durability
Mohs hardness of 7, excellent durability with no cleavage
Care & Maintenance
Wash with warm soapy water; resistant to most household chemicals
Rarity & Value
Very common, low commercial value for rough non-gem specimens
Special Characteristics
Piezoelectric and pyroelectric properties
Lore & History
Widely used in various cultures for energy work and meditation; considered a master healer crystal