Bad

The flop bet was good if we make a bet designed for villian to come along with a wider variety of hands (gutshot draws, backdoor flushes) Then the turn is going to increase his odds of winning the hand. So then if we bet the turn after that 2nd diamond falls and completes a straight possability we are even more unsure about our hand and what he has because we let him come along to cheap.

Thats what i think anyway.