Guys,
First of all not sure if this belongs here or on hands analysis. Apologies if this is wrong section.
We're playing a samll game in work today:
Player 1 Starting hand

Player 2 Starting hand

Player 2 is known to bet at anything.
Player one has raised 600 pre flop blinds are a 100/200 and player 2 calls.
Flop comes
Player one bets 600 and player 2 calls
Turn is

Player 1 moves all in for his last 1800 chips and is called by player 2 who has him covered and a 100 spare.
River comes

So both players make their flush but who wins the pot as both where using 4 from the board plus the one in their own hand?
I instantly said as dealer player 1 has it as he has the higher diamond. Plus in my heart of hearts I thought he deserved it as he played it better and Player 2 invariably was spoiling the game for others.
Anyway there where 6 involved obviously player one agreed with em and we had one other in agreement but other 3 where saying it was a split pot I decided as dealer that player 1 won. Was I right?