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Cat's eye

Cat's eye
(kats' - i)

15th c.; ger; ouga, lat. oculus; gr. op-; Sans. aksi, lat. méd. cattus; egyp. techau

Chrysoberyl with a fibrous structure showing chatoyancy effect used as an hard gem in jewelry
Color
Transparent to translucent honey brown to apple green
Family
Chrysoberyl
Chemical composition
BeAl2O4
Crystal system
Orthorhombic
Hardness (Mohs scale)
8,5
Specific gravity
3,73 ±0,03
Refractive index
1,746 - 1755 ±0,005
Birefringence
0,009
Optical character
Biaxial +
Chanthaburi

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Jaipur

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