Norfolk Police say they are trying to trace the owners of the items after seizing them last week.
Officers stopped a car on Koblenz Avenue in Norwich at around 11.30am on Wednesday 29th January where they made the discovery.
A man, aged in his 30s and from Suffolk, was arrested on suspicion of handling stolen goods and has since been released under investigation while enquiries continue.
Anyone who recognises the jewellery, or has any information, should contact DC Angela Tolson at Norwich Criminal Investigation Department on 101 quoting crime reference 36/7076/20.
Images from Norfolk Police.