On 12/21/18, at approximately 7:49 p.m., three subjects entered a jewelry store. Two subjects went directly to showcases containing loose diamonds while the third subject remained at the door as a lookout. The two subjects at the display case removed hammers and began smashing display cases. The subjects grabbed trays of loose diamonds and then fled from the store. The subjects fled in an unknown direction. If you have any information regarding these subjects, please call the Jewelers’ Security Alliance at 212-687-0328.