Elunetru was the term used to denote the object placed in the sanctum sactorium of the worship centres of Ayyavazhi

Ayyavazhi

Ayyavazhi is a dharmic belief system that originated in South India in the 19th century. It is cited as an independent monistic religion by several newspapers, government reports and academic researchers. In Indian censuses, however, the majority of its followers declare themselves as Hindus...

. The elunetru is a compiled structure of flame shaped copper, a saffron cloth and separate garlands made of rudraksha

Rudraksha

Rudraksha Rudraksha Rudraksha (also Rudraksh; Sanskrit: ("Rudra's tears") is a large evergreen broad-leaved tree whose seed is traditionally used for prayer beads in Hinduism. The seed is borne by several species of Elaeocarpus, with E. ganitrus being the principal species used in the making of a...

  and Flowers. The saffron cloth in wrapped on the, perpendicularly placed flame-shaped copper, which appears like a seat, on which the separate garlands made of rudraksha and flowers are placed around. In Ayyavazhi this is which placed instead of the Idol. This was placed in the belief that we are too Knowledgeless to identify the form of God. But it is comfortable to all devotees when symbolized. And so the Elunetru, the seat was provided for the Formless God.