According to the Puranas once a fierce war broke
out between Lord Shiva and the Jallundhara. They both appeared
equally matched with no one ready to lose, and hence the battle
continued for a long time. In fact it was not like an ordinary
battle between the gods and the demons, but it was a match between
the chastities of two chaste women Parvati and Vrinda.Chakra
Shaligram represent milky way galaxy which is Vishnu of our
universe. See the information from different Purana.So thinking, that spoiling the chastity of Parvati, he could
defeat Lord Shiva, Jallundhara reached Parvati in the guise of
Lord Shiva. But Parvati, who is herself the supreme ruler of
illusion (MAYA) knew by her virtues the craftiness of Jallundhara.
She at once ended his guise and signalled Lord Krishna (Vishnu)
that it was now just to spoil the chastity of Jallundhara's wife,
Vrinda, and it will not be a sin. Shaligram Puja is done on every
auspicious occasions like as Satyanarayan Katha and Charnamrit is
obtained on offering puja misthan to shaligram jee.Real Shaligram
Silas with Chakra mark .They are found only in Mukti chhetra and
Damodar Kunda, north-west of Nepal in Kali Gandaki river. They
should be worshiped with Tulsi leaves. It fulfills desire, gives
great wealth, name and fame, power, position and greatness.
Following Divine Shaligram Stone are
available-Vishnu Golden Sila ,Sudarshana Shaligrama, Lakshmi
Narayana Shila ,Ganesha Shila Lakshmi Shila ,Shivalinga Shila Devi
Shila ,Varaha Shila Kurma Shila ,Hayagreeva Shila ,Matsya Shila ,Manasa
Sarovar Shila ,Rare Janardhana Shila and Saligrama Jewelry .