Clear Quartz
Quartz var. Clear Quartz · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Trigonal, typically forming prismatic crystals terminated by six-sided pyramids
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2
Formation Process
Hydrothermal and pegmatitic crystallization from silica-rich fluids at varying temperatures and pressures
About This Crystal
A tumbled, highly transparent, colorless specimen with a glassy luster, showing internal fracture planes and light reflections
Physical Characteristics
Colorless body color, white streak, no true cleavage, conchoidal fracture, specific gravity of approximately 2.65, brittle tenacity, piezoelectric properties
Optical Properties
Uniaxial positive optical character, refractive index of 1.544 to 1.553, birefringence of 0.009, singly and doubly refractive depending on the direction
Hardness & Durability
Origin Region
Found worldwide, with notable deposits in Brazil, Madagascar, the United States (Arkansas), and the Alps
Hardness & Durability
Mohs hardness of 7, good durability, resistant to scratching by most common materials, lacks cleavage making it structurally tough
Care & Maintenance
Can be safely cleaned with warm soapy water and a soft brush; avoid harsh chemicals and sudden thermal shock; very stable in sunlight
Rarity & Value
Very common and widely accessible, with value depending heavily on clarity, size, cut, and whether natural or synthetic
Special Characteristics
Displays strong piezoelectricity, meaning it generates an electrical charge when mechanical stress is applied
Lore & History
Historically revered by ancient civilizations such as the Romans, indigenous tribes, and Japanese as a sacred stone of light, purity, and spiritual amplification. Associated traditionally with all chakras and known as the master healer in crystal lore