An expensive Swarovski dragonfly broach was among the jewellery stolen during a burglary in Sydenham earlier this year.
Police have released CCTV images showing two men they would like to talk to in connection with the January 14 raid, which also saw a jewellery box, pearl drop earrings and a necklace taken.
The burglary, which took place at around 5.40pm, is being linked with another attempted burglary at a nearby property.
The first suspect is described as a white male aged in his forties. He has untidy black hair with grey sides and stands at 5ft 7inches tall. He was wearing blue jeans, black jacket and black trainers.
The second suspect is described as a “chubby” male. He was wearing a dark coloured tracksuit with the hood up.
No arrests have been made and enquiries continue. Anyone with information is asked to call Southwark CID on 020 7232 6127 or the police non-emergency line on 101. Alternatively, contact Crimestoppers anonymously on 0800 555 111.