Thieves broke into a house in Bletchley before stealing a large amount of gold jewellery on Wednesday.
Between 8.45am and 3.30pm, offenders forced entry to a house in Cambridge Street, Bletchley, through the back door.
Once inside the house, they stole assorted gold jewellery.
Det Con Sam Reynolds, investigating the incident, said: “Cambridge Street is usually a busy street with people coming from and going to the shops and the burglary happened during the day, so I am confident someone may have seen something.
“I would urge anyone with any information to contact me via the 24-hour Police Enquiry Centre on 0845 8 505 505.”
If you don’t want to speak to police or leave your name, call the charity Crimestoppers on 0800 555 111.