metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Hardness: 6.5-7 Mohs scale; Color: Green (due to Chromium-rich mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (aggregate); Specific Gravity: 2.64-2.69; Distinctive feature: Aventurescence (shimmering effect).
- Hardness
- 6
- Color
- Green (due to Chromium-rich mica)
- Luster
- Vitreous to waxy
Identified More metamorphic →
Explore Green Aventurine in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 Mohs scale; Color: Green (due to Chromium-rich mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (aggregate); Specific Gravity: 2.64-2.69; Distinctive feature: Aventurescence (shimmering effect).
Formation & geological history
Formed through the metamorphism of quartz-rich sedimentary rocks (sandstone) into quartzite, where mica crystals (fuchsite) provide the green pigmentation and shimmer. Most specimens are from the Proterozoic or Paleozoic eras.
Uses & applications
Widely used for ornamental carvings, cabochons for jewelry, tumbled stones for metaphysical collecting, and occasionally as building veneers or high-end landscaping stone.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to the accidental discovery of aventurine glass in the 18th century, which the mineral resembles.
Field identification & locations
Identified in the field by its granular quartz texture and characteristic green shimmer when rotated under light. Major deposits are found in India (near Mysore and Chennai), Brazil, and Russia. Collectors should look for even color distribution and strong sparkle.
More like this
