Aventurine
What is Aventurine?
Aventurine is a form of quartz characterized by its translucence and the presence of platy mineral inclusions that give a shimmering or glistening effect known as aventurescence. The most common color of aventurine is green, but it may also be orange, brown, yellow, blue, or gray. Green aventurine is colored by fuchsite inclusions, while other colors are due to inclusions of hematite or goethite.
Optical Properties
- Refractive Index
- 1.544-1.553
- Birefringence
- 0.013
- Pleochroism
- Weak to absent
- Optical Character
- uniaxial (+)
- Dispersion
- 0.013
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Aventurine before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Aventurine Localities Map
See where Aventurine is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Green, Blue, Red, Orange, Yellow, Brown, Gray
- Hardness (Mohs)
- 6.5 - 7
- Density
- 2.65 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Silicon, Oxygen, Aluminum, Iron, Chromium
Also Known As
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Aventurine FAQs
How do I identify Aventurine?
Aventurine can be identified by its hardness of 6.5 - 7 on the Mohs scale, Green color. Look for these key characteristics when examining specimens.
What color is Aventurine?
Aventurine typically appears in Green, Blue, Red, Orange, Yellow, Brown, Gray. Color can vary depending on impurities and formation conditions.
How hard is Aventurine?
Aventurine has a hardness of 6.5 - 7 on the Mohs scale. This gives it moderate hardness.