Welcome to HL Gross & Bro. of Garden City, New York. H.L. Gross & Bro. is proud of be part of the worldwide network of Official Rolex Jewelers, allowed to sell and maintain Rolex watches. An authorized retailer of Rolex watches, we guarantee the authenticity of each and every part of your new Rolex watch. Our official rolex dealer in long island invite you to visit our showroom located at 840 Franklin Avenue, Garden City, New York 11530 to browse our collection of Rolex watches, including the Datejust, Milgauss, Explorer and more. Our story began when two brothers, Harry and Abe Gross, with their bold ambition and help from their father, opened a long island jewelry store, New York.