There's a mineral so rare that only one specimen of it has ever been found in the entire world.
"It's called kyawthuite (cha-too-ite), a tiny, tawny-hued grain weighing just a third of a gram (1.61 carats). On first glance, you might mistaken it for amber or topaz; but the unassuming mineral speck has value beyond measure."
"mineralogists were able to relate the stone to synthetic BiSbO4 β bismuth antimonate β though with the formula Bi3+Sb5+O4, an arrangement never before found in nature."
So we've already KINDA done it, just with less Bi+Sb.
It's the only known natural occurrence of a mineral that (as it happens) has also been synthesized. Many minerals are available as exact synthetics. Diamond is an example.
So then why the fuck would anyone give a shit then. Who cares if we made it or some natural proccess made it? its the same shit (well maybe except some isotopes but thats mostly irrelevant).
I think these downvotes misunderstood what you were saying.
Because it's clear to me what you meant was, "then why do people still care if their diamond is natural or synthetic?" Which is a fantastic question. If I ever bought a diamond, which I won't because moissanite exists, but if I did, it would have to be synthetic.