Jewellery was stolen from a bungalow in Spierbridge Road, Storrington.
Police are appealing for witnesses after burglars entered between Monday 9 September and Tuesday 10 September.
DC Sarah-Jane Neal said:”We are keen to talk to anyone who may have seen suspicious activity in the area. They should contact Worthing detectives on 101 or email firstname.lastname@example.org quoting serial 0592 10 September. They can also call the independent charity Crimestoppers anonymously on 0800 555 111.”