Police have released surveillance video of the suspect, who got away with two necklaces around 3 p.m. on June 7.
Both were diamond necklaces, worth an estimated $100,000.
Police say the man began talking to a store employee, removed the necklaces from the counter and fled the scene.
No one was injured.
The suspect is described as a black male, last seen wearing a dark-colored suit and tie.
Anyone with information in regards to this incident is asked to call the NYPD's Crime Stoppers Hotline at 800-577-TIPS.
