mineral
Milky Quartz (Tumbled)
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale. Color: Translucent to opaque white/light grey with subtle iron staining. Luster: Vitreous to waxy when polished. Crystal structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Luster
- Vitreous to waxy when polished
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Physical properties
Hardness: 7 on Mohs scale. Color: Translucent to opaque white/light grey with subtle iron staining. Luster: Vitreous to waxy when polished. Crystal structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific gravity: 2.65.
Formation & geological history
Forms in hydrothermal veins, pegmatites, and metamorphic rocks where quartz crystallizes in the presence of tiny gas or liquid inclusions, creating its milky appearance.
Uses & applications
Popular for lapidary work, decorative rock tumbling, wire-wrapping jewelry, healing crystals, and mineral collection starter sets.
Geological facts
Milky quartz gets its white appearance from millions of microscopic fluid inclusions trapped during the mineral's growth.
Field identification & locations
Identified by its Mohs hardness of 7 (scratches glass readily), milky translucent white color, lack of cleavage, and smooth tumbled surface. Found abundantly worldwide.
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