Jewellery valued between £5,000 and £10,000 has been taken in a burglary from a shop in the Bailgate in Lincoln.
Rings and a gold locket among other items were taken from Colonia Jewellers on 18 Bailgate.
Burglars smashed a window to gain access and grabbed the valuable items.
The incident was reported at 9.41am on Monday, April 14, and happened some time between then and Saturday after 5pm, when the shop closed for the weekend.
Sergeant Guy Farmer is asking anyone who saw or heard any suspicious activity in the Bailgate area during the weekend of 12th-14th April to contact him, on 101 quoting incident number 80 of April 14.
Also, if anyone has been offered jewellery in suspicious circumstances, please call 101. Alternatively, call the charity Crimestoppers anonymously on 0800 555111.