The Catseye (Lahsuniya) is a gemstone for Ketu. Keti has a command over this gemstone. Catseye is worn in order to strengthen Ketu in our Horoscope. When a person wears a Catseye, his interest in the secret knowledge is created and enhanced. The person becomes efficient in the mysterious subjects and the discovery. His foresightedness is awakened. The Catseye is a gemstone of hot nature. Hence, it should be worn very cautiously and under the guidance of an expert.