mineral
White Quartz Star
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Milky white to translucent
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Quartz forms in a wide variety of environments including igneous, metamorphic, and sedimentary processes. This milky variety often forms in hydrothermal veins where fluid inclusions create the opaque white appearance.
Uses & applications
Commonly used for lapidary work, decorative carvings, jewelry, and as a 'healing stone' in metaphysical practices.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz gets its white color from tiny bubbles of gas or liquid trapped during crystal growth.
Field identification & locations
Identify by its hardness (will scratch glass), lack of cleavage, and translucent white appearance. It is an extremely common mineral found globally.
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock