Sorry it's hard to see here, but there is a rectangle mark on our new quartzite counters. It is from the oil based sealer that our tile guy was using on our floors. He placed it on the counters and now there is this!! My husband tried to get it off using a green pad and now the spot is dull and even more noticeable. What can we do? It's darker than the rest of the counters and very obvious. Also, I thought quartzite wasn't supposed to stain/etch?! uggh