First off I wouldn't 3-bet preflop from the Big Blind
I imagine you don't have many worse hands than QQ in your range on this board when you 3-bet from the BB vs HJ, probably TT and JJ without a diamond so if that is your 3-betting range from the BB (AJs+, AQ+, TT+) then you can fold immediately without being exploited assuming you peel all pairs with a diamond
If we assume that you were in the SB and thus had a wider 3-betting range: (Say 66+, A5s+, A9o+, 98s, T9s, JTs, QTs+, KTs+, KJo+)
Then you'd have to peel the flop, although you could still dump TT- and maybe JJ without a diamond. (It's actually close to dumping QQ without a diamond, really depends how you want your range to play but this should be fine)
Turn fold is standard you now have pretty much the bottom of your range becasue all your single diamond hands and flush draws have improved.