My point, which I believe I made clearly, was to suggest how an organic material could possibly be altered to have the stone-like properties Stefany described.

I clearly did not ID the beads definitively as tagua nut:

"Petrified tagua nut beads?": the question mark indicates this is a speculative comment.

"What if you took old tagua nut beads like those shown in the photo below (I assume these are tagua nut)": again, no definitive ID.