Homonym: Cat's eye (Gemstone)
A "cat's eye" is a gemstone known for its unique optical phenomenon called chatoyancy, which creates a narrow band of light that resembles a cat's slit pupil. This effect occurs due to the presence of parallel inclusions within the stone, which can be made from various minerals, including quartz and tourmaline. The most prized cat's eye stones are typically found in chrysoberyl.
In addition to its beauty, cat's eye is believed to have protective properties in various cultures. It is often associated with good luck and is thought to bring clarity and focus to its wearer. The gemstone is commonly used in jewelry, such as rings and pendants, making it a popular choice among collectors.