I have an otherwise-new slab that was gathering dust [and assorted metal tools apparently!] for some time. We can see the outlines of two rusted tools here. One is a utility knife blade and the other is anyone's guess.
Is there a way to hide/fix these deep stains/blemishes? I'm presuming a bit of scuffing and then applying a small amount of some finishing compound. Does that exist for a nearly-white quartz[-like] surface? What would I expect the quality of the result to be? I'm trying to decide whether to use this countertop for a different bathroom [vs buying everything new].

