'Aranmula Kannadi' is a unique art which cannot be found else anywhere in the world.The making of the metal mirror is a long process that needs enough patience. Some undisclosed metals are alloyed with copper and tin to cast the Aranmula Kannadi in typical clay moulds.it takes not less than 14 days to make a dozen metal mirrors, and the smallest Aranmula Kannadi of one-and-a-half inches costs about Rs.950. The technique of production of this mirror is a closely guarded secret handed over from generation to generation of craftsmen.