"Curly Sue" > wrote in message
> One would think so. It's unfortunate that the manufacturers don't
> come right out and say it's OK. I'm not willing to do that experiment
> either ;>
>

It is not an experiment. Pizza stones are the same clay se din kiln
furniture. Kilns for firing clays and glazes are routinely take to
temperature at least double, maybe triple what a self cleaning oven reaches.
In busy times, kilns are fired every day.

My stone never leaves the oven rack, cleaning cycles are routine.