Clear Quartz
Quartz (Silicon Dioxide) · 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
Forms in a wide range of environments including igneous, metamorphic, and sedimentary rocks, most notably crystallizing from hydrothermal solutions and pegmatites
About This Crystal
A small, tumbled, transparent to translucent specimen of clear quartz with a smooth, polished surface and a vitreous luster, showing minor internal fractures
Physical Characteristics
Colorless or white body color with a white streak, conchoidal fracture, distinct lack of cleavage, specific gravity of approximately 2.65, and brittle tenacity
Optical Properties
Uniaxial positive optical character with a refractive index of 1.544 to 1.553 and low birefringence
Hardness & Durability
Origin Region
Found worldwide; notable sources include Brazil, Madagascar, the United States, and the Alpine regions
Hardness & Durability
Mohs hardness of 7, excellent durability making it suitable for everyday jewelry use without easily scratching
Care & Maintenance
Easily cleaned with warm soapy water and a soft brush; safe from most household chemicals, but should be stored separately to avoid scratching softer stones
Rarity & Value
Very common and widely available; low to moderate value depending on clarity, size, and cut
Special Characteristics
Exhibits piezoelectric and pyroelectric properties, generating an electrical charge under mechanical stress or temperature changes
Lore & History
Often referred to as the 'Master Healer' in metaphysical traditions, used to amplify energy and thought, and historically utilized in ancient cultures for crystal balls, talismans, and ritual tools