mineral
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
AI-generated identification · may be incorrectHardness: 6.5-7.0 (Mohs). Color: Golden yellow to deep brown. Luster: Silky to chatoyant. Crystal structure: Trigonal/fibrous. Specific gravity: 2.64-2.71.
- Hardness
- 6
- Color
- Golden yellow to deep brown
- Luster
- Silky to chatoyant
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Physical properties
Hardness: 6.5-7.0 (Mohs). Color: Golden yellow to deep brown. Luster: Silky to chatoyant. Crystal structure: Trigonal/fibrous. Specific gravity: 2.64-2.71.
Formation & geological history
Formed when quartz replaces crocidolite (blue asbestos) through a process of pseudomorphism, often found in metamorphic environments associated with iron formations.
Uses & applications
Predominantly used for jewelry (cabochons), ornamental carvings, and as a popular specimen for rock collectors.
Geological facts
The 'moving' light effect is called chatoyancy. It is a member of the quartz group and is famously found in the Griqualand West region of South Africa.
Field identification & locations
Identified by its distinctive golden-brown bands and silky luster that changes angle with light. Commonly found in South Africa, Australia, India, and the USA.
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