The Nava Ratna (Nine Gems)
Gem of Ketu: Cat’s Eye/Lehsuniya: Cat’s eye is the Jyotish gem related to Ketu (the moon’s descending node) which is a shadowy

Cat’s Eye- Lehsuniya gemstone
entity called Moksha Karaka or “planet of enlightenment”. It gives very fine spiritual tendencies, asceticism, non-attachment and psychic powers as well. It is also related to spirit and astral forces. Wearing a cat’s eye is said to exalt spirituality and psychic ability, and protect one from mysterious dangers and diseases. It brings fortune to gamblers.
Specially on Rahu and Ketu Rahu and Ketu are not planets, these are nodes and called un-illumined planets. In western astrology, these are called dragon’s head and dragon’s tail or ascending node and descending node respectively. They always have a retrograde motion. Whereas the other planets go anti clockwise, Rahu and Ketu go clockwise. Rahu and Ketu indicate love affairs, evil thoughts, fear complex, dissatisfaction, maternal grandfather, leprosy,
Ketu denotes: liar, illegal cohabitation, harsh speech, pilgrimage, denial of progeny (infertility) and one may adopt, delays in matrimony, defective eyesight, amputation of body part, secluded life, insanity, wound by accidents and snake bites, fire injury, delays, impediments, obstacles, disfavor of superiors and government, renunciation, slow working, change of residence, unable to lead independent life, ill health, wicked temperament, worries due to children, financial gain, dual marriages (two or more marriages at the same time or separately), suspicious nature and mind, jewelry and stammering.
Ketu denotes diseases such as intestinal worms, epidemics, eruptions on skin, fever, low blood pressure, deafness and stammering.
When to wear Cast’s Eye: Cat’s Eyes gem stones should be worn on a Tuesday. Cat’s Eyes gemstone can be set in penta alloy (mixture of 5 metals), gold or silver after assessing the suitability of the metal from birth chart.
Caution:
One should not wear Blue Sapphire, Emerald, and Diamond along with Cat’s Eye gemstone unless recommended by an expert astrologer.
