I have a crema marfil countertop in my bathroom that was damaged when I spilled a bit of CLR (calcium/limestone/rust) cleaner on it. The polished finish is now dull where the cleaner touched it. I found an article that described fixing a problem like this with a high speed polisher and automotive rubbing compound, but this was to repair "cultured" marble. I don't know if my counter is cultured or natural- but even if it is natural is there any difference in how you'd restore the shine on this stone? I'm worried about turning a small dull spot into a very big dull spot!