Antonio Brown Owes Celeb Jeweler $1 Mil After Failing To Fight Diamond Heist Case

Antonio Brown has been ordered to cut a high-profile jeweler a check for over $1 million ... this after he failed to fight a lawsuit that the diamond expert slapped him with last year.

TMZ Sports broke the story ... Shuki International -- a world-renowned businessman who's been the jewelry guy for high-profile celebs like Floyd Mayweather for years -- sued AB back in April 2023 after he claimed the former NFL star borrowed a bunch of his prized items in 2022 but never returned them or paid for them.

In his lawsuit, Shuki said he gave AB a pair of his "Shuki International" diamond fingers -- which the jeweler said cost $500K apiece -- under the premise that Brown would eventually give them back ... or simply cough up the dough for them.

Shuki said he also handed over a rose gold black diamond version of the finger piece, a white gold chain, and a ring -- all with the same expectation.

Yet the jeweler claimed Brown failed to ever return the pieces or hand over the money ... so he asked a judge to force AB to fork over $1,095,000 for it all.

And, after Brown never responded to the suit, a judge issued a default judgment for Shuki last week.

Shuki told us he attempted to reach out to Brown over the decision on Sunday ... but the ex-Buccaneers wideout never returned his call. He added that he's disappointed over the whole matter -- considering the two used to be close.

Brown, meanwhile, was just seen out in LA with one of Shuki's diamond fingers earlier this month ... showing it off to our photog on Rodeo Drive.