Looks like Iron oxidation..Might be difficult to remove since it may be part of the stone..but I would try an iron out poultice

On Fri, Feb 10, 2012 at 1:54 PM, Micah <micahgautier@gmail.com> wrote:
Below are a couple pics of a limestone vanity, it has a stain on it that has penetrated the stone there is no edge to it. Any suggestions on how to deal with it? Thx





Micah
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