Clear Quartz
Quartz var. Clear Quartz (Rock Crystal) · Semi-Precious Gemstone and Mineral Specimen
Crystal System
Trigonal, typically forming prismatic crystals terminated by six-sided pyramids
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Forms in a wide range of geological environments, most notably through hydrothermal veins and cooling pegmatitic magmas
About This Crystal
A small, transparent to translucent tumbled or naturally weathered colorless stone with a vitreous luster and visible internal fractures or inclusions
Physical Characteristics
Colorless body color, white streak, conchoidal fracture, lack of distinct cleavage, specific gravity of approximately 2.65, brittle tenacity
Optical Properties
Singly refractive or weakly doubly refractive with a refractive index of 1.544 to 1.553 and low birefringence
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, excellent durability with no cleavage, highly resistant to scratching and suitable for everyday jewelry wear
Care & Maintenance
Can be easily cleaned with warm soapy water and a soft brush; safe from fading in sunlight and resistant to most common household chemicals
Rarity & Value
Very common and widely available, with low to moderate commercial value depending on clarity, size, and specific cut or form
Special Characteristics
Exhibits piezoelectric and pyroelectric properties, often containing tiny fluid or mineral inclusions
Lore & History
Historically revered across many ancient civilizations as a stone of pure light, clarity, and energy amplification; widely used in modern crystal healing to clear the mind and align all chakras