Where is Tiger's Eye found?
Tiger's Eye (a variety of Chalcedony, which is a cryptocrystalline form of silica)
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Open the appTiger's Eye 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 Tiger's Eye
South Africa
The primary and most significant source of high-quality Tiger's Eye, particularly in the Griqualand West region of the Northern Cape Province. Deposits are found in banded iron formations.
Australia
Significant deposits are found in Western Australia, often associated with banded iron formations.
India
Smaller deposits are known, contributing to the global supply.
Myanmar (Burma)
Some occurrences have been reported.
United States
Limited occurrences in states like Arizona and California.
Collecting tips
- Look for Chatoyancy. The most distinctive feature is the moving band of light. Rotate the specimen under a light source to observe this effect. This is crucial for identification.
- Observe Color and Pattern. Tiger's Eye typically displays golden-yellow to reddish-brown colors, often with parallel bands or streaks. Blue varieties (Hawk's Eye) also exist.
- Check Hardness. With a Mohs hardness of 6.5-7, it will scratch glass and steel. This helps differentiate it from softer imitations.
- Examine Texture (if unpolished). Unpolished specimens may show a fine, fibrous texture, indicative of its pseudomorphic origin.
- Consider Geological Context. If found in situ, it will likely be in veins within iron-rich metamorphic rocks, often associated with banded iron formations.
Quick Check
- Color:
- Golden-yellow to reddish-brown, sometimes blue
- Luster:
- Silky, chatoyant
- Streak:
- White
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