mineral
Milky quartz (possibly rose quartz)
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectHardness 7 Mohs; translucent white to very pale pink, vitreous-to-waxy luster, massive rather than visibly crystalline, with conchoidal fracture and no cleavage. The smooth edges indicate a polished or tumbled specimen.
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Physical properties
Hardness 7 Mohs; translucent white to very pale pink, vitreous-to-waxy luster, massive rather than visibly crystalline, with conchoidal fracture and no cleavage. The smooth edges indicate a polished or tumbled specimen.
Formation & geological history
Forms when silica-rich fluids crystallize in cavities, veins, and igneous or metamorphic rocks; specimens may range from Precambrian to recent hydrothermal deposits. The cloudy appearance comes from microscopic fluid inclusions or inclusions of other minerals.
Uses & applications
Used as an ornamental stone, lapidary material, carving stock, and inexpensive jewelry or décor. Clearer varieties are more desirable for gemstones.
Geological facts
Its appearance overlaps with white chalcedony, calcite, and pale rose quartz; a hardness test is useful, though polished surfaces can be misleading.
Field identification & locations
Common worldwide, including Brazil, Madagascar, India, the United States, and Australia. Quartz should scratch glass, while calcite will not; avoid testing valuable pieces visibly.
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Septarian Pebble
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