A would-be robber tried to pull the rings from a woman’s fingers in Bicester last Thursday.
Between around 5.55pm and 6.05pm, the offender also pushed and demanded money from the victim, a 55-year-old woman, in Linden Road.
The offender is a white man, around 6ft, slim, in his late twenties, with pale skin, medium length dark hair, blood shot eyes and acne scars on his cheeks.
He was wearing a dark zip up coloured top and possibly gloves.
The victim was not injured during the incident.
Investigating officer, PC Nathan Davis from Bicester police station, said: “If you have any information about this incident or recognise the description of the offender then please contact the Thames Valley Police Enquiry Centre on 101.
“If you don’t want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
“No personal details are taken, information is not traced or recorded and you will not go to court.”