Cat's Eye describes a gemstone polished into a cabochon that 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 inclusions of fine, slender parallel mineral fibers in the gemstone that reflect light in a single band. Of all the gemstones that exhibit cat's eye, Chrysoberyl Cat's Eye is the best known. Chrysoberyl has the strongest and most distinct cat's eye effect of all gemstones.
Cats Eye is the gemstone of Ketu. Ketu is the representation of karmic collections both good and bad, spirituality and supernatural influences. It is said that the wearer of this stone is saved from major health diseases.