Travancore Devaswom Board President Prayar Gopalakrishnan said the ornaments were found inside the hundi, which is opened once a month for counting the offerings.
The Krishna temple at Ambalapuzha in Alappuzha district is also famous for the shrine's main offering, the 'Palpayasam, a delicious dessert made with 'chemba' rice and milk. It is popularily known as 'Ambalapuzha Palpayasam'.
The ancient 'pathakkam', a Navaratna-studded pendant, and chain, were part of sacred ornaments used to decorate the presiding deity on auspicious occasions. It was found missing last month.