Blood Diamond Mining

[Goomba]

I have cut the diamonds but i do not know how to sell them/ where.

 

[INS Alfie Kipper]

I have cut the diamonds but i do not know how to sell them/ where.

Blood diamond seller, in the middle of the sea below the airfield.

 

[Washington]

You sell them at the Smugglers outpost which is between the red zone and the boat buyer, in the water. 

 

[Damian222]

The blood diamond buyer is at the smugglers outpost but you gonna need a boat.