Pop star Jessica Mauboy revealed last week on Instagram that she has accepted a proposal from her long-term boyfriend Themeli Magripilis while holidaying in Greece.

The designer of the ring, Nadia Neumann, has revealed a secret design detail of the impressive oval diamond sparkler.

She told Daily Mail Australia that the custom-design ring included a hidden symbol that was significant to Jessica – a butterfly.

Jess’ ring is an oval cut 1.5 carat diamond surrounded by smaller round and marquise cut diamonds with added round and marquise cut stones on the white gold band.   

Nadia revealed she worked closely with Themeli to craft the ring.