Several 22-carat pieces of jewellery were stolen during a burglary in south London.
The Met has now launched an appeal to recover the jewels which were taken from a home on Willis Avenue in Sutton between 5pm and 9pm on April 23.
Two 22-carat gold rings - one with a silver stone and the other with a ruby - were taken during the burglary.
Other items included two gold necklaces, one orchid-shaped and the other a Farohar pendant, as well as gold bangles, a 22 carat gold band, and a 22 carat gold 18-inch chain.
Farohar pendants are secular symbols of pride and unity among the Persian community.
Initial forensic examinations revealed CCTV showing a silver BMW fleeing the scene.
Detectives have now released images of the stolen jewellery and are asking the public - and shop owners who buy gold - to get in touch with any information.
Detective Constable Lee Simpson, who is leading the investigation, said: “The sentimental and cultural value of this stolen jewellery is priceless. This is why my team and I are working tirelessly to identify those responsible and locate the items. We're urging anyone who recognises the pieces - or has any information as to their whereabouts - to contact us immediately.”
People with information can contact the Met via 101, or report anonymously through Crimestoppers on 0800 555 111, quoting reference number 01/7475684/26.