Cat's Eye describes a gemstone which has been cut and polished with a domed surface (cabochon), it shows a mobile streak of light that called cymophane or cat's eye That displays a narrow band of concentrated light going across the width of the gemstone, This band of light runs length wise from one end of the stone to the other. This effect is called chatoyancy or cat's eye effect. In gemology chatoyancy is an optical reflectance effect seen in some natural gemstones.
Chrysoberyl Cat's Eye is the best known Of all the gemstones that exhibit cat's eye as it has the strongest and the most distinct cat's eye effect of all known gemstones, it’s the only one that has the privilege of having the name "Cat's Eye" without any prefix, that means that any use of the term ("cat's eye") without any other specification refers to Chrysoberyl cat's eye.
The value of a Cat's Eye gemstone is related to the clarity and intensity of the cat's eye band. It displays in different colors like: Blue, Brown, Gray, Green, Multicolored, Orange
In India
