mineral
Green Quartz (Prasiolite variant or Aventurine)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Pale green to olive green; Luster: Vitreous (glassy); Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Pale green to olive green
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on Mohs scale; Color: Pale green to olive green; Luster: Vitreous (glassy); Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65
Formation & geological history
Forms in igneous and metamorphic rocks through hydrothermal activity or as secondary deposits. Most natural green quartz is found near amethyst deposits that have undergone specific natural heat or radiation.
Uses & applications
Used primarily in jewelry as a gemstone, decorative carvings, and by crystal collectors for aesthetic and metaphysical properties.
Geological facts
Natural green quartz is quite rare; most 'Prasiolite' on the market is actually heat-treated amethyst or irradiated yellow quartz. True green quartz is sometimes called Vermarine.
Field identification & locations
Identify by its light green translucency and lack of visible inclusions common in aventurine. Commonly found in Brazil, USA (Arizona), and Namibia. Collectors should look for even color distribution.
