Could you check my sentence? Can I use the adjective "callous" to describe stones. Is the highlighted sentence correct?

Even if they enter here by mistake, the forest will turn them into callous stones, but it makes no difference to them since they are already have no heart.

Thank you,


The adjective "callous" cannot be used to describe stones, or any inanimate object, or an animal. It's used to describe humans or the behavior of humans only.

In the given sentence use: "...turn them into stones...". There is no need for an adjective with stones. The nature of a stone is well-known, and no further description is necessary.

Thanks for your reply.

Is the highlighted sentence correct?

They already have no heart or hearts?