For generations, gem enthusiasts, astrologers, and collectors have been fascinated by the mysterious gemstone known as cats eye stone, or lehsunia in Hindi. Because of the optical phenomena that creates a slit in the diamond that is likened to a cat's eye, it is not only aesthetically pleasing but also distinctive. Some individuals also believe that it possesses strong metaphysical abilities. But before you go out and get one, there are a few things you should know.