Yes you can. I use mine that way all the time and show it at my shows that way. Under the product guide on consultants corner it does not specificly say "can be used with hot stone" but it does say that "condensation may occur when using with hot stones" So I take that as a yes. I take mine right out of the oven and place it on the server to show my guests. I also use my round server on my table all the time as a hot pad for my other hot dishes.

 

I have put my hot stone directly on the woven tray, but I have also put one of our kitchen towels on the tray first and then put the stone on top of that. It makes a pretty presentation and kind of shows off the towels as well.

 

I have a terry cloth like hot pad that I put down first. You can't see it under the stone and it's thick enough that none of the stone is actually on the tray so it still looks nice.

 

I really don;'t think it is necessary to put anything down. Like I said, I use mine all the time and put a piping hot stone on it and no trace of a problem.I think that if it was an issue that it would state not to put the hot stone on it in the product guide.

 

I put the hot stones directly on mine. I also put a raised trivet underneath it. I do that so the air can circulate under the tray/basket and the heat won't ruin my wooden table. I let my guests know this tip too.