They already shipped it back. I got the refund notice and the return shipment to seller all at once.
I probably shouldn't spend right now anyway, so I guess the universe wanted to help me?
it was probably something significantly wrong, maybe lab listed as natural? They reject synthetic stones listed as natural automatically.
If it's minor or better, they give you a choice of accepting it. I got a beautiful tassel pendant that was listed as 14k art deco. They noted that it is slightly incorrect. When I called them, they said it tested 22k and they recommended accepting it lol. It's a Victorian.