Diddy’s jeweler was robbed at gunpoint, and the thieves allegedly made off with $1 million of jewelry, RadarOnline.com has learned. The crime happened in Manhattan’s Diamond District Thursday at around 1:30 AM. Benny Nisanov, aka “Benny Da Jeweler,” was ransacked at his pop-up shop by two men carrying firearms and threatening to shoot. The robbers took an estimated $1 million worth of jewelry from a display case before jumping in the getaway car, police sources told the New York Post. According to insiders, the vehicle was a black sedan, possibly a Mercedes. Law enforcement gave no information…