According to the police, the burglary occurred sometime between 3am and 4am on 30 December.
Some of the stolen items were imported from the US and were not readily available in the UK.
Detectives have released images to give an idea of some of the items stolen and are urging members of the public to report any offers of such jewellery they receive.
Detective Constable Barrington Goffe said: "There was a large amount of jewellery stolen which we would expect the offender or offenders to be looking to sell on."
"We have made various enquiries with second-hand shops and other local businesses but would urge any members of the public who have been or are offered costume or imitation jewellery for sale in suspicious circumstances to get in contact."