Police are investigating after two high-end rings were stolen from a Sunshine jewellery store last week.
A man entered the Harvester Road shop and began speaking with staff about engagement rings about 11.15am on Thursday 5 June.
The man was given two rings to look at when he suddenly ran from the store.
The two rings were worth about $8500 in total.
Investigators have released an image of a man they believe may be able to assist with their enquiries.

The man is perceived to be Caucasian in appearance with a solid build and wearing a light-coloured beanie, long-sleeve blue tie-dye top, blue pants and black shoes.
Anyone who witnessed the incident, has CCTV/dashcam footage or any other information that could assist police is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au