Can not tell from the picture.  If it has damage in it already then pour a little vinegar on it to see id it etches.  What are you trying to do with it. 

From: Michael and Tammy <daci6537@comcast.net>
To: Restoration and Maintenance <sccpartners@stoneandtilepros.com>
Sent: Tuesday, September 27, 2011 10:57 AM
Subject: [sccpartners] Fw:

Can anyone tell me if this looks like a limestone to them?

--------------------------------------------------
From: <tdavis6537@att.blackberry.net>
Sent: Tuesday, September 27, 2011 1:55 PM
To: "Home email" <daci6537@comcast.net>

>
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