It's known story that Raja Simha II hid Pandiya crown and Indhra aaram in Rohana hills. Then Rajendra bought them back to Thamilagam. Iwonder whathappened tothe royal jewels thereafter.
Just now i found that Indhra aaramwas mentioned to be worn by Kulasekara Pandiyan and Sundara Pandiyan, the contemporaries of Kulothunga III, in their meikeerthis.
It is quite possible that it could be found in the treasures found in the vaults of Lord Padmanabaswamy Temple or waiting to be discovered in another temple.
I dont think this was mentioned in the British or Muslim chronicles, so must be waiting for discovery somewhere in India!