The shankhas that open towards left hand are Vaamavarti Shankhas. These
are the most commonly available shankhas and used for all religious
purposes. In fact, most of the conches are Vaamvarti, that is, their
bulge opens towards left side (facing North).
The special geometry of a natural shankha creates a positive energy
field and so they are used as Yantras. Some astrologers also recommend
the types of shankha and the location where these are to be placed to
control negative planetary effects. Different methods of worshipping the
shankhas are also described in the Indian scriptures for benefits
varying from wealth, success and peace of mind to health, healing and
hypnotism.
The blowing of a Vaamavarti shankha removes the ill effects of negative
energies and it purifies our surroundings and soul.
