The premises of J W Marsh Funeral Directors Dudley were targeted by burglars, who forced their way into the parlour on High Oak in Pensnett.
The burglars stole rings belonging to a woman who had been buried, as well as other jewellery and cash from a safe.
A police investigation has begun into the burglary, which happened around midnight on Tuesday,.
A spokesman for West Midlands Police said: "We’re investigating after a funeral directors was targeted in a ram raid in High Oak, Pensnett, just before midnight .
"Burglars forced their way into the building before fleeing with cash and jewellery from a safe.
"Enquiries are under way and anyone with information is asked to contact us via Live Chat, or by calling 101, and quote 20DY/283805M/20."
Alternatively, contact Crimestoppers anonymously on 0800 555111 or at crimestoppers-uk.org
J W Marsh Funeral Directors Dudley were approached for a quote, but declined to comment.