What is the stone-like disc seen at the top of the temple in Odisha and nearby district's Temple architecture called?

Explanation

‘ Amalaka ’ is one of the important elements of Temple Shikhara (Tower) in Nagara Shaili usually found in Uttara Bharatha. A mandir ‘kalash’ is a metal or stone spire used to top the domes of Hindu temples. In Hindu temple architecture, the ‘jagati' is the raised surface of the platform or terrace upon which some Buddhist or Hindu temples are built.