Jake Paul is lettin' it be known he has no issue with being the "Problem Child" -- 'cause he turned his nickname into an insane diamond chain -- that's worth $225,000!!!
The YouTuber debuted the ice at his pre-fight event with Tyron Woodley on Thursday in Tampa, Fla. -- and TMZ Sports has learned it's an absolutely gaudy piece.
We're told Paul hit up his old pals at BlueMoon and Co. in Los Angeles to put the bling together .