Cat's eye chrysoberyl is the Jyotish gem related to Ketu (the moon's descending node) which is a shadowy entity called Moksha Karaka or "planet of enlightenment". It gives very fine spiritual tendencies, asceticism, non-attachment and psychic powers as well. It is related to ghosts, spirits and astral forces. Wearing a cat's eye chrysoberyl of at least 1.5 carats is said to exalt spirituality and psychic ability, and protect from mysterious dangers and diseases. It brings fortune to gamblers. A cat's eye chrysoberyl can be substituted with cat's eye tourmaline or cat's eye opal of at least 4 ct.

Gemological properties

Chemical composition: A12(BeO4) Beryllium Aluminum Oxide
Color: Light greenish yellow, green, brownish green, brownish yellow, brown
Hardness: 8.5
Density: 3.70 - 3.72
Refractive index: 1.744 - 1.755
Birefringence: 0.011 double refractive
Occurrence: Sri Lanka, Tanzania, Brazil, China, Russia

Astrological Properties

Planet: Ketu
Cosmic Color: Infra-red
Number: 7
Sign: Pisces
Element: Water
Day: Thursday
Time: After Sunset

Sanskrit Names

Ketu-ratna (Ketu's gem)
Vaidurya (Cat's eye)
Sutra-mani (Thread-jewel)