લહસુનિયા is the gemstone of કેતુ. Every other lagna needs the chart read first — the stone amplifies the graha either way.
Also known as: લહસુનિયા રત્ન · કેતુ રત્ન
A planetary gem is held to absorb and transmit the radiation of its graha, which is why it is the strongest intervention in the classical set — and the only one that can make things worse. It amplifies whatever the planet is already doing in your chart, so it is prescribed against a reading, never against a wish.
Cat’s Eye is Ketu’s stone, and like Rahu’s it is withheld from most charts — meditation is the remedy the corpus prefers here.
Cat’s Eye is Ketu’s stone, prescribed for protection and for the disorientation an afflicted Ketu brings.
The classical record gives no per-lagna verdict for this stone, because most charts are not meant to wear it at all. It is prescribed narrowly — a strong dispositor, an upachaya placement, and a specific purpose — or not prescribed. Mantra and charity are the remedies for this graha.
Like Rahu’s stone, it amplifies whatever Ketu is doing — including the abandonment and dissociation patterns. Most charts do not benefit from it. Meditation and charity are the remedies the corpus points to instead.
બેરિલ લહસુનિયા · એપેટાઇટ · ફાઇબ્રોલાઇટ
Most charts should not wear લહસુનિયા at all. It is prescribed only where the node's dispositor is strong, where it sits in an upachaya house, and for a specific purpose named by a qualified astrologer.
The accepted substitutes are બેરિલ લહસુનિયા, એપેટાઇટ, ફાઇબ્રોલાઇટ. They carry the same caution as the primary stone: the substitute is cheaper, but it is the graha and not the price that decides whether it should be worn.
The mantra, the weekday fast and the charity are safe for anyone — they address કેતુ without amplifying it. લહસુનિયા is not: a planetary gem strengthens whatever the graha is already doing, so it needs a chart reading first.