Milky Quartz
Quartz (Silicon Dioxide) · Mineral Specimen and Semi-Precious Stone
Crystal System
Trigonal, with a massive or anhedral crystal habit displaying irregular facets
Mineral Group
Silicates (specifically Tectosilicates)
Chemical Formula
SiO2
Formation Process
Hydrothermal and magmatic processes, precipitating from silica-rich fluids at various temperatures
About This Crystal
A small, raw, whitish-to-clear crystalline quartz fragment with a milky or cloudy appearance due to microscopic fluid inclusions, exhibiting a vitreous to sub-vitreous luster.
Physical Characteristics
Color is milky white to translucent, white streak, conchoidal fracture with no true cleavage, specific gravity of approximately 2.65, brittle tenacity
Optical Properties
Uniaxial positive optical character, refractive index of 1.544 to 1.553, birefringence of 0.009, doubly refractive, generally non-pleochroic
Hardness & Durability
Origin Region
Found globally; major deposits in Brazil, USA, Madagascar, and the Alps
Hardness & Durability
Mohs hardness of 7, good durability and toughness, resistant to scratching by most common household items
Care & Maintenance
Can be safely cleaned with warm soapy water and a soft brush; avoid harsh chemicals or sudden extreme thermal shock
Rarity & Value
Very common mineral globally, low commercial value for small raw specimens, highly accessible for collectors
Special Characteristics
Contains numerous microscopic liquid and gas inclusions responsible for its characteristic milky opacity; exhibits piezoelectric properties
Lore & History
Historically used across many ancient cultures for tools, ornaments, and spiritual rituals; in modern metaphysical practices, it is often associated with clarity, purification, and the Crown Chakra