Quote Originally Posted by Admiral Squish View Post
I would argue the best part to make the armor out of would be the the carapace. Carapace-shell full plate would give you immunity to magic and reflect some of it back at the casters.
That makes sense. Make Hide Armor out of the skin (possibly grants fire resistance, maybe damage reduction) or some form of Medium or Heavy armor out of the carapace, which grants tarrasque spell reflection.

Calculating price or what armor bonus it would confer is beyond me though.