Tri State Stone

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8200 Seven Locks Rd
Bethesda, MD 20817
Tri State Stone, Co., is a family owned and operated since 1926. The quarry's flagship product is Carderock stone. This beautiful building stone is a mica-schist quartzite, with horizontal and vertical cleavage making it easy to work into numerous installation styles. Feel free to call us today for more specific information, and let us know how we can help you.

Reviews

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3.520 reviews
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J. S.
5/1/2021

Now that I have this quarry business DOWN, I went back to get more stone. My amazing project guy said to get a "Supersack" of the Delaware River Stone, 1-3". Called up Tri-State, and the guy on...

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Ann C.
9/28/2018

Local quarry that maintains a good selection of stones and provides generally good and attentive service even if you just drop in randomly with questions. Good supplier if Carderock Rock, a...

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Nick S.
8/7/2018

I visited their quarry. A man at the scale house told me that a loader would be with me shortly. After waiting 30 minutes I decided to call. The person I spoke to told me to flag down a loader, as...

Kristen S.
4/1/2021

Great service and the best prices in the area! Will update review once items ordered are in and contractor picks them up.

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Wayne L.
4/25/2015

A cool stone yard that has tons of materials on site. To get to the sales office you need to drive down the hill to a trailer. The staff here is super helpful and talked us through all the options...

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