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Unread 09-15-2014, 08:32 PM   #1
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Limestone hearth - crack or vein?

We purchased a 300 lb (2" thick, 18" deep, 6.5 ft long) hearth made from limestone (Indiana Chestnut). We took it off the pallet to dry lay it and center it (before we wet laid it) and found what we think is a hairline crack/defect in the stone - 100% front to back across the stone and 80% of the way through the stone top to bottom (see attached pictures). The supplier claims that it is simply a vein and there is nothing wrong with the stone. Thoughts?

Thanks! Fritch
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Unread 09-15-2014, 11:32 PM   #2
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Looks like a crack from here. Can you feel it by running a fingernail or maybe a razor blade across it?

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Unread 09-16-2014, 04:45 AM   #3
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Unread 09-16-2014, 07:26 AM   #4
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We ran a knife across it - we maybe can feel something near the back of the stone but nothing on most of the surface - but then again, can you really feel a hairline crack? Our concern is lifting it off to wet lay it and then have the hairline crack turn into a full crack and damaging our tile floor when it breaks in two. I'm reading that limestone is very porous but I'm not seeing anything on hairline cracks - we will talk to the supplier again.

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