Place the mold on a work surface. Spray the inside of the mold with an even coating of mold release spray so that you will be able to remove the pave stone with ease.
Pour quick setting cement mix into a mixing trough. Mix in small amounts of water at a time with a trowel until you achieve a thick cake batter like consistency.
Fill the mold with the cement mixture. Tap the bottom of the mold against a work surface several times to remove any air pockets in the mixture. Cover over the mold with plastic sheeting and place it on a flat surface out of direct sunlight. Leave the mold at least 24 hours.
Pull the sides of the mold away from the pave stone and press on the bottom of the mold to remove the poured pave stone. Cover over the pave stone with plastic sheeting for one to two weeks to allow the cement to cure.
Remove the plastic sheeting and brush on an even coat of penetrating stone sealant to seal the pave stone.