Cat’s-eye is the gemstone for Ketu and has a silky streak of light that moves with the turning of the stone. It is an aluminate of beryllium – a mixture of aluminum and beryllium – having traces of oxide of iron and chromium, which serve as coloring agents and give it brownish and greenish tinges. It is called ‘vaidurya‘ in snaskrit and ‘Lehsaniya‘ in hindi. It is found in India, Sri Lanka, Tanzania, Brazil, China, Russia & Burma.

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