0.5/1 river decision NLCASH

[Grandezza]

Been playing some with this player. He's a good player capable of mixing up his play. He has a nice wide 3-betting range.

effective stacks $100.

I open 99 in the sb he 3-bets to 12, I call.

Flop comes Q53 (I think) w/ two diamonds At least it's Q high with no other card higher than my nine. He bets like 18ish into 23ish. I call.

Turn is the King of diamonds. check check.

River is an offsuit Jack. he bets 39ish. anyone calls?

I don't have any memory of this scenario happening before.

I feel like all I can put him on something like a king with a high diamond, QJ and AT. I know this is quite a few hands but his 3-betting range is really wide and I'm sure he's capable of running a bluff here since my hand also seems really transparent.

edit: I have the 9d fwiw.