Milky Quartz
Quartz var. Milky Quartz · Semi-Precious Gemstone / Carved Decorative Stone
Crystal System
Trigonal, carved into a crescent moon shape
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2
Formation Process
Hydrothermal veins and pegmatites, crystallizing from silica-rich aqueous solutions at moderate temperatures and pressures
About This Crystal
The specimen is carved into the shape of a crescent moon with a smooth, polished finish. It exhibits a translucent to opaque quality with a milky white to pale greyish body color, displaying internal cloudiness caused by microscopic fluid and gas inclusions.
Physical Characteristics
Color: Milky white to translucent grey; Streak: White; Cleavage: None; Fracture: Conchoidal; Specific Gravity: 2.65; Tenacity: Brittle; Piezoelectric properties present.
Optical Properties
Uniaxial positive, refractive index of 1.544-1.553, birefringence of 0.009, doubly refractive, vitreous to waxy luster on the polished surface.
Hardness & Durability
Origin Region
Worldwide, extensively mined in Brazil, Madagascar, and the United States
Hardness & Durability
Mohs hardness of 7, excellent durability with no cleavage planes, highly resistant to scratching, making it well-suited for everyday jewelry and decorative carvings.
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid harsh chemical cleaners, safe for ultrasonic cleaners though mechanical shock should be avoided.
Rarity & Value
Common; widely available globally, with value determined largely by the quality of the carving rather than the intrinsic stone value.
Special Characteristics
Contains dense microscopic fluid inclusions that scatter light, creating the characteristic milky appearance.
Lore & History
Often associated with lunar energies, intuition, calming properties, and emotional balance in contemporary crystal healing traditions, though these are cultural beliefs rather than scientifically validated claims.