Panchayatana form of worship introduced by Adi Shankaracharya has assigned one element to one of the five deities in Hinduism. Mother Goddess (Shakti or Devi or Bhagavati) is the embodiment of Agni Mahabhuta (fire) among the five elements. The five elements are ether/space, air, fire, water and earth. The five deities in Panchayatana form of worship are Vishnu, Mother Goddess, Ganesha, Surya and Shiva.
In this concept, the five deities are worshipped in the form of sacred stones found in five holy rivers.
Mother Goddess, the embodiment of Agni Mahabhuta, is worshipped in the form of swarnamukhi stone or rekha shila found in Godavari River in Andhra Pradesh.