What about a basalt based product?
http://www.abresist.com/ABRESIST_Linings.htm
This example is resistant to heat lower than what you are looking for but it's a start....
I've worked with no glare Acrylic before, it's made for signage, its clear to see through but one surface has something similar to a very, very light sand blasting. You could also try very weak chemical etching.
