Bandits wearing goggles and respirators carried out the heist at Aydin Jewelry store on Route 17 and Airmount Avenue in Bergen County.
Police say two men barged into the store and claimed they were FBI agents investigating a possible meth lab. One suspect was dressed in a royal blue jump suit with a hood.
Moments later, one of the robbers pulled out a handgun and zip tied three store employees.
The workers were put in a back room, giving the robbers time to steal jewelry from a safe and display cases.
After the suspects took off, workers at the deli next door freed the victims.
Anyone that has information regarding this crime is asked to call the Ramsey Police Department at 201-327-2400.