Try Bleach and some paper towels-check it after an hour-don't leave on too long.
Hydro peroxide 30/ 40% volume may work as a regular poultice.
Paint stripper may work.


On Thu, Jul 18, 2013 at 9:59 AM, Dayron <dayron@perfectmarblefloors.com> wrote:
Mysterious blue mark, tried acetone and nothing




Sent by iPhone
Dayron Padilla
Perfect Marble


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