saili daru-mayi lauhi

 lepya lekhya ca saikati

mano-mayi mani-mayi

 pratimasta-vidha smrta

 

Translation: 

 

The Deity form of the Lord is said to appear in eight varieties — stone, wood, metal, earth, paint, sand, the mind or jewels.

 

Purport: 

 

Srila Jiva Gosvami explains that certain Deity forms, such as those made of sand, are manifested for a brief time to fulfill a personal desire of the worshiper. Those, however, who desire to attain pure love of God should worship the permanent form of the Deity (made, for instance, of marble, gold or brass), and they should maintain continual worship. In Krsna consciousness there is no scope for neglecting the worship of the Supreme Personality of Godhead.