Amazonite
Microcline Feldspar
What is Amazonite?
Amazonite is a tectosilicate mineral, a variety of microcline feldspar. It is typically a blue-green to greenish-blue color, and is prized as a gemstone. The color is due to small amounts of lead within the feldspar. Amazonite is often found in association with smoky quartz, albite, and other feldspars.
Optical Properties
- Refractive Index
- 1.522 - 1.530
- Birefringence
- 0.012
- Pleochroism
- Weak
- Optical Character
- biaxial (-)
- Dispersion
- 0.012
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Amazonite 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.
Amazonite Localities Map
See where Amazonite 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
- Blue-green, greenish-blue
- Hardness (Mohs)
- 6 - 6.5
- Density
- 2.56 - 2.58 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- (K,Na)AlSi3O8
- Elements
- Aluminum, Silicon, Oxygen, Potassium
Also Known As
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Amazonite FAQs
How do I identify Amazonite?
Amazonite can be identified by its hardness of 6 - 6.5 on the Mohs scale, Blue-green color. Look for these key characteristics when examining specimens.
What color is Amazonite?
Amazonite typically appears in Blue-green, greenish-blue. Color can vary depending on impurities and formation conditions.
How hard is Amazonite?
Amazonite has a hardness of 6 - 6.5 on the Mohs scale. This gives it moderate hardness.