Where is Green Amethyst found?
Prasiolite (Quartz variety)
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Open the appGreen Amethyst occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Green Amethyst
Montezuma, Minas Gerais, Brazil
A significant source of natural prasiolite, where amethyst is naturally heated by geological processes.
Lower Silesia, Poland
Another known locality for naturally occurring prasiolite.
Thunder Bay, Ontario, Canada
Some amethyst from this region can be heat-treated to produce prasiolite.
Arizona, USA
Certain amethyst deposits can yield prasiolite upon heat treatment.
Collecting tips
- Look for Amethyst Deposits. Natural prasiolite is rare. Most 'Green Amethyst' on the market is heat-treated amethyst. Therefore, searching for amethyst deposits in areas known for natural heating events (e.g., volcanic regions) might yield natural prasiolite, or at least material suitable for heat treatment.
- Examine Color Uniformity. Natural prasiolite often has a more subtle and sometimes uneven green color compared to artificially treated material, which can be more uniformly colored.
- Consult Geological Maps. Identify regions with known occurrences of amethyst in geological settings that suggest past or present geothermal activity, which could lead to natural prasiolite formation.
Quick Check
- Color:
- Pale green to yellowish-green
- Luster:
- Vitreous
- Streak:
- White
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