In 2006, Diamont's "Young and the Restless" character Brad Carlton was revealed to be Jewish, much to the actor's delight. Diamont (whose given surname is Feinberg) is Jewish himself, and he was honored to be able to highlight his heritage on screen, according to an interview with The Jewish News. Regarding Jewish representation in the media, Diamont expressed his joy that the ex-Navy SEAL Brad Carlton didn't conform to common Jewish stereotypes. He said, often a Jewish character "is not the guy taking names and kicking ass. [Brad] is not Woody Allen."

Brad was forced to reveal that his real name was George Kaplan, his mother was a concentration camp survivor, and that he was Jewish. His mother Rebecca Kaplan (Millie Perkins) was being targeted by Nazi bounty hunters for her role as a Holocaust art restorer. Diamont relayed to Soap Opera Digest that this storyline was one he was most proud of portraying throughout his daytime career.

Later that same year, Diamont's character Brad openly celebrated Jewish holiday Yom Kippur for the first time and used the holy day as an opportunity to make amends with those he had wronged (via The Jerusalem Post).