As per Shrimad Ramayana, Sriramapiran gave His signet ring to Hanuman for identification. While leaving Ayodhya for hermetic life in the forest, did He not renounce all wealth including ornaments? Or did He take just this ornament alone?

Perumal’s signet ring was not like any other jewels which are usually worn by kings. It was a personal ornament exchanged between Himself and Piratti during their wedding.
It should be construed that Perumal did abandon all the jewels of a king, and the divine couple took just this exclusive and personal ornament like a pavithram.