Ketu is connected with the psyche of a native. It disturbs the person both mentally and emotionally and many times physically. It causes severe depression, anxiety, bad dreams to the native. The person becomes very suspicious. The person may become a lunatic if ketu is conjunct moon or opposing it. To pacify Ketu, following mantras prove useful:
“ऊँ केतुं कृण्वन्नकेतवे पेशो मर्या अपेश से। सुमुषद्भिरजायथा:”
“ऊँ धूम्रवर्णाय विद्महे कपोतवाहनाय धीमहि तन्नं: केतु: प्रचोदयात।”
“ऊँ कें केतवे नम:”
“ऊँ स्त्रां स्त्रीं स्त्रौं स: केतवे नम:”
“ह्रीं केतवे नम:”
“कें केतवे नम:”
Cat`s eye is the stone for Ketu. It wards off evil eye, black magic etc. It also prevents from the malefic effects of ketu. One can also wear Tiger`s eye in place of cat`s eye although both are very nominally priced.