A pair of gunmen raided a Chinatown jewelry shop and made off with $600,000 in bling, cops said. The bandits barged into Sean’s Diamond & Jewelry Inc on Canal St near Broadway around 11:30 Am on September 15, according to authorities. They pulled guns and ordered a staffer to open safe before they tied up all 3 employees and ran from store with pricey haul, according to police. Nobody was injured during the holdup. Cops released pics of two men, one wearing a green New York Jets hat, and are asking for help identifying them.