Milky Quartz
Quartz var. Milky Quartz · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Trigonal system, massive or tumbled habit
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Hydrothermal and igneous processes, crystallizing from silica-rich fluids at varying temperatures and pressures
About This Crystal
A tumbled, smooth, milky white to pale yellowish-white quartz specimen showing translucent to sub-translucent properties with a vitreous to waxy luster
Physical Characteristics
White to clear body color, white streak, conchoidal fracture, no distinct cleavage, specific gravity of 2.65, brittle tenacity
Optical Properties
Uniaxial positive, refractive index of 1.544 to 1.553, birefringence of 0.009, doubly refractive
Hardness & Durability
Origin Region
Worldwide distribution, notably Brazil, Madagascar, USA, and the Alps; found in diverse geological settings
Hardness & Durability
Mohs hardness of 7, good durability, resistant to scratching by most common materials, suitable for jewelry
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals and extreme thermal shock
Rarity & Value
Extremely common worldwide, inexpensive, often sold as tumbled stones or mineral specimens
Special Characteristics
Contains microscopic fluid or gas inclusions that cause the milky white turbidity; may exhibit piezoelectric properties
Lore & History
Often associated with clarity, purification, and spiritual connection in modern crystal lore, though these are traditional beliefs and not scientific claims