gemstone
Blue Cat's Eye
Chatoyant Quartz or Fiber-optic Glass
AI-generated identification · may be incorrectHardness 6.5-7 if quartz, vibrant blue color, vitreous luster, hexagonal crystal system if natural quartz, displays prominent chatoyancy.
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Physical properties
Hardness 6.5-7 if quartz, vibrant blue color, vitreous luster, hexagonal crystal system if natural quartz, displays prominent chatoyancy.
Formation & geological history
Formed via hydrothermal veins or manufactured as fiber-optic glass.
Uses & applications
Used primarily in jewelry, cabochons, and ornamental carvings.
Geological facts
The glowing line effect, known as chatoyancy, resembles a cat's slit eye and is caused by light reflecting off parallel fibers.
Field identification & locations
Identify by observing the moving band of light across the polished dome when rotated under a light source.
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