A ruby necklace was part of a haul stolen during a raid on a Roydon home.
Thieves forced open the patio door of the home between 9.30am on July 10 and 3pm on July 13.
Thieves searched the property and stole a 20ct gold ruby necklace and a ladies Gucci watch.
Police are keen to hear from anyone who may have witnessed any suspicious activity, involving people or vehicles, in the Roydon area between the times stated.
Anyone with information should contact Det Con Alex Heathcote at King’s Lynn CID on 101 or call Crimestoppers anonymously 0800 555 111.