I don't know how practical that's, though I've read about people suggesting that. How many words of the seedphrase is the person going to carve into a stone? That's why I don't believe it's a practical reality. Again, there's always that wear and tear that comes when stones stay a long period of time. Anyway, to each what works for them.

For me, I just jot my seed phrases on papers. I don't even like saving on cloud or email or keeping it as screenshots or writing them on notepads. Nah! I'm ancient when it comes to saving my seed phrases. The ancient way with papers works well for me.