Bennett said the recovery was "fantastic news".
"We're really appreciative of the support online and how everybody jumped in and tried to assist as much as possible.
"I certainly got phone calls all day and my competition even phoned up and see if he could help me in anyway which is good."
Bennett's employees first noticed the slabs were missing after returning from a job on April 26.
"When we got back from the job site we saw a whole lot of stuff had been moved around. That's when we realised stuff had been stolen.
"Then we went back through our [CCTV] footage and discovered that actually a lot of it had been stolen the night before over Anzac Day."
It was just last week that Bennett said he thought his business would be "hard pressed" to get the products back but the recovery has restored his confidence.
"It's a hard call because I knew we had great footage and they eventually have to be caught because of the cameras. I'm definitely grateful that it's back."
One of the slabs was unique piece that had already been claimed by a client when it was stolen.
Bennett said the irreplaceable piece was "priceless" as the mine that excavated the granite had shut down years ago.
"It's that one piece that the lady really wanted that we couldn't replace that's been returned so that's fantastic.
"There's quite a bit to locate [but] that one piece is the one that was heartbreaking to lose."
He said he hoped the fact that the granite slabs had been returned would act as a deterrence to others.
"On my wife's initial [Facebook] post we were hoping people would just bring it straight back and then we wouldn't have had to go that far but because they kept coming we had to involve the police."
Bennett was grateful for the support his family had received after his wife posted about the burglary.
"That's the true beauty of it for me is that people out there are willing to support and help. As a community we don't support or tolerate this sort of stuff."