Where is Peridot found?
Olivine (gemstone variety)
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Open the appPeridot 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 Peridot
San Carlos Apache Reservation, Arizona, USA
One of the most significant sources of gem-quality peridot, particularly large stones. Found in basaltic lava flows.
Zabargad Island (St. John's Island), Egypt
Historically important source, known since ancient times. Peridot here is found in peridotite xenoliths within basaltic rocks.
Myanmar (Burma)
Produces fine quality peridot, often found in association with serpentine and other ultramafic rocks.
Pakistan (Kaghan Valley)
Known for producing high-quality, vibrant green peridot, often found in association with serpentinite.
China
Significant producer, with deposits found in basaltic rocks.
Vietnam
Emerging source of good quality peridot.
Norway
Found in some ultramafic intrusions.
Australia (Queensland)
Occurs in basaltic rocks.
Collecting tips
- Geological Context. Focus on areas with recent or ancient volcanic activity, particularly basaltic lava flows or ultramafic intrusions. Look for xenoliths (rock fragments) within these igneous rocks.
- Associated Minerals. Peridot is often found with other mantle minerals like pyroxenes, chromite, and magnetite in its primary geological settings.
- Color and Luster. Look for transparent to translucent green crystals with a vitreous luster. The distinctive green color is a key identifier.
- Double Refraction. In larger, transparent specimens, the strong double refraction of peridot can be observed by looking through the stone at a light source or printed text; facet edges or text will appear doubled.
- Hardness Test (Caution). While not recommended for valuable specimens, peridot's hardness of 6.5-7 on the Mohs scale means it can scratch glass but can be scratched by quartz. Use this only on non-gem quality or small fragments.
Quick Check
- Color:
- Yellowish-green to pure green to brownish-green
- Luster:
- Vitreous to oily
- Streak:
- White
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