[null and void]

A ceramic would probably have the most promise for durability. But it needs a kiln, and would have trouble keeping dimensional stability.

I bet one could be formulated that would fire up just fine in a self-cleaning oven.

[HiTech RedNeck]

Self-cleans get up to about 800F. Something more like a hobbyist ceramic kiln, that gets glowing hot inside, would be appropriate.