Tri-State Stone & Building Supply

8200 Seven Locks Rd
Bethesda MD 20817

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Opening Hours

  • Mon: 7:30am-4pm
  • Tue: 7:30am-4pm
  • Wed: 7:30am-4pm
  • Thu: 7:30am-4pm
  • Fri: 7:30am-4pm
  • Sat: 7:30am-11:30am


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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.