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chrysoberyl cats eye gem a t - Newest pictures

☹The Gemstone Cat's Eye☹

Cat's Eye describes a gemstone polished into a cabochonthat displays a narrow band of concentrated light going accross the width of the stone. This effect, known as chatoyancy, or cat's eye effect, is caused by inclusionsof fine, slender parallel mineral fibersin the gemstone that reflect light in a single band. Of all the gemstones that exhibit cat's eye, ChrysoberylCat's Eye is the best known. Chrysoberyl has the strongest and most distinct cat's eye effect of all gemstones. Though several different gemstones types exhibit a cat's eye effect, only Chrysoberyl's cat's eye enjoys the privilege of having the name "Cat's Eye" without any prefix. Whenever the term "Cat's Eye" is used, it refers to Chrysoberyl cat's eye by default, unless otherwise specified.
Chemical FormulaBeAl2O4
ColorBlue, Red, Green, Yellow, Orange, Brown, Pink, Purple, Gray, Multicolored
Crystal System Orthorhombic
Refractive Index1.744 - 1.755
SG3.5 - 3.8
Transparency Translucent
Double Refraction.009
Luster Vitreous
Cleavage1,1 ; 3,2
Mineral Class Chrysoberyl

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