Do a bit more research... There are plenty of bricks for sale out there that are rated for heats of this temperature and higher. As long as your not putting a basic landscaping brick from a Big Box store in the oven, you'll be fine.
How to Start a Handmade Business
Starting a Handmade Business
$40 Backyard Chair
Lamina Nixie Clock
Delicious Butter Soft Pretzels