The ring Kevin Hart gifted to Tom Brady for being such a good sport during Sunday night's roast wasn't merely a prop ... TMZ Sports has learned it's the real deal -- coming in with a staggering worth of $40,000!!!
We're told celeb jeweler Jason Arashaben, CEO of Jason of Beverly Hills -- who actually created TB12's final Tampa Bay Buccaneers Super Bowl ring -- was the mastermind behind the piece, tasked with completing it in time for Netflix's "The Greatest Roast of All Time: Tom Brady.