Mon-Thu, 9:30am-5:30pm, by appointment only; Fri, 9:30am-3:30pm, by appointment only; Sat-Sun, closed
B, D, F, M at 47th-50th Sts.-Rockefeller Center
This third-generation diamond-district jeweler buys rough-cut diamonds directly from overseas, taking out the middleman to help save on price. Jewelers craft their wares in the store’s cutting room and let you design your own engagement rings and wedding bands. They’ll even show you how diamonds go from rough to bling.