Could be sealer residue as well.
Teest properly if not dyed use mb12 or similar powder to remove residues

On Oct 17, 2012 10:19 AM, "Dayron" <dayron@perfectmarblefloors.com> wrote:
From the pic it looks like a basalt, Absolute Black

Sent from my iPad

On Oct 17, 2012, at 9:28 AM, Barry Raduta <barry@diamondstoneandtilecare.com> wrote:

Hello partners,
I received a call from a potential customer regarding gray spots on his absolute granite floor tiles (they are relatively new) .  He thinks they are the result of some household cleaning liquid.  My guess is that this can be the the dyed absolute granite that comes from India or China.  The spots are spread over a few tiles, but not the whole floor.  Regardless, how can dyed tiles be restored?  Honing/ polishing would remove all of the dye and leave the floor lighter and not "absolute black" anymore.  Can the damaged tiles be dyed, and if so, do you think they would match the other tiles?  He doesn't think they were sealed.  A photo is attached.
Thanks........Barry



--
Thank You,
Barry V Raduta
Diamond Stone & Tile Care-South
888-473-8111

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