Detectives from Central Goldfields Crime Investigation Unit are investigating following a burglary at a Maryborough jewellery shop on Tuesday.
Investigators believe two unknown offenders smashed a window of the High Street business just after 10.50pm on 21 April.
Once inside the offender smashed a number of glass display cabinets and grabbed an unknown quantity of jewellery before fleeing.
Police have released CCTV images of a dark coloured sedan they believe the offenders used during the incident.
Investigators are also hoping to identify the driver of a white van that drove past the sedan in the hope they may have witnessed the incident.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au