mineral
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Pale to deep green
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or as a secondary mineral in volcanic rock cavities. It can be found in metamorphic environments or sedimentary deposits as weathered grains.
Uses & applications
Primarily used in jewelry as a gemstone, decorative carvings, and as a collector's specimen.
Geological facts
Natural green quartz is actually quite rare in nature; most commercial 'green quartz' is amethyst that has been heat-treated. When naturally occurring due to inclusions like fuchsite, it is known as Aventurine.
Field identification & locations
Identify by its hardness (scratches glass) and lack of cleavage. Can be found in riverbeds or near quartz veins. Look for a glassy luster and characteristic green hue.
