The Jewish Mob is a criminal organization which deals in diamond trading. Isaac Roth, a Hasidic Jew, appears to be the boss of the operation, with Mori Green, a mainstream Orthodox Jew, as the underboss and his right hand man. All members of the Jewish Mob have suits with ties, with non-matching jeans. They can appear in two forms: A bald fat man, or one smaller, with short hair. Their vehicle of choice are black PMP 600's. The LCPDdatabase says that Roth, Green and the Jewish Mob in general make frequent deals with African warlord Claude Wome, a dealer in conflict diamonds.
Later, Issac Roth blames Ray Boccino for botching the deal and taking the money and diamonds for himself (when in reality this was Johnny's fault). After an argument, Roth threatens Boccino. In response to this, Boccino, in the mission Late Checkout, sends Niko Bellic to kill Roth and his Diamond Dealers at the Majestic Hotel.