Hi.  I just took a look at a granite counter top that the owners want to have polished. I cleaned a test area and the counter appeared to have good clarity and gloss with no wear or scratches particularly.  But it does have kind of smeary (is that a word?) cast to it that leads me to believe that the top is coated with resin.  I did a test on an edge with some acetone and took out a faint black material, which I assume is not dirt.  I'm wondering if there is anything I can do to get the top looking better?  I assume that MB-20 and the like will not work so well.  Maybe I am not reading it right and the top is the real thing.  I am not sure how to test for this.
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From the desk of
Baird Standish
Managing Partner
Facility Specialists, LLC
1616 Walnut St.
Philadelphia, PA 19103
Phone: 215-732-7505
Fax: 215-546-9160