Banded Amethyst
Banded Amethyst tumbled
A variety of Quartz
What is Banded Amethyst?
Known as the birthstone of February, banded Amethyst is a polished, semi-precious stone that is prized for its alternating bands of purple and white. This gem is actually a combination of Amethyst and pure Quartz and it's also known as Chevron Amethyst. Some portions are translucent.
Optical Properties
- Refractive Index
- 1.544-1.553
- Birefringence
- 0.009
- Pleochroism
- Weakly dichroic
- Optical Character
- Biaxial positive
- Dispersion
- 0.013
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Banded Amethyst 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.
Banded Amethyst Localities Map
See where Banded Amethyst is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Lavender (light purple), Purple, White
- Streak
- White
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- Si, O
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Banded Amethyst FAQs
How do I identify Banded Amethyst?
Banded Amethyst can be identified by its Lavender (light purple) color. Look for these key characteristics when examining specimens.
What color is Banded Amethyst?
Banded Amethyst typically appears in Lavender (light purple), Purple, White. Color can vary depending on impurities and formation conditions.
