Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Stone description: dark gray

Wall Number Sort descending Country State Classification Source
10L51 United States Pennsylvania Argillite (Slate) Lynnport
10LA30 United States Maine Diabase Vinal Haven
10LA42 United States New Jersey Diabase Jersey City
10LA5 United States Wisconsin Dolomite Oshkosh
10LA7 United States New York Limestone Onondaga
10LB18 United States Pennsylvania Argillite (Slate) Lynnport
10LB23 United States Massachusetts Gneiss Becket
10R51 United States Pennsylvania Argillite (Slate) Lynnport
10rb16 Argentina Marble Unkown
10RB23 United States Massachusetts Granite Framingham
10RB42 United States Oregon Basalt Albany
10RB49 United States Wisconsin Quartz Marquette
11LA39 United States Tennessee Sandstone Cater's Creek Davidson Co.
11LB15 United States Missouri Dolomite Sedalia
11Lb36 United States Virginia Diabase Catlett's Station
11LB38 United States Virginia Granite Fredericksburg
11LB7 United States Pennsylvania Dolomite Reading
11RA16 United States Iowa Dolomite Osage Sta.
11RA22 United States Missouri Limestone Neosho
11RA6 United States New York Limestone Buffalo
11RB14 United States Missouri Dolomite Hermann
11RB30 United States Virginia Schist Farquier Co.
11RB31 United States Virginia Diabase Leesburg
12LA22 United States Missouri Limestone Pleasant Hill
12LA7 United States New York Limestone Canajoharie
12LB13 United States Montana Marble Helena
12LB7 United States New York Limestone Le Roy
12RA12 United States Ohio Dolomite Lexington
12RA17 United States Iowa Dolomite Garrison
12RB13 United States Ohio Dolomite Holmes Twp. Crawford C.
12RB17 United States Iowa Dolomite Garrison
12RB23 United States Kansas Limestone Oswego
12RB24 United States Tennessee Limestone Lebanon Pike
12RB4 United States Illinois Limestone Breese
12RB5 United States Tennessee Limestone Murfreesborough
12RQ United States New York Sandstone South Unadilla
13La1 United States Vermont Limestone Isle La Motte
13LA35 Spain Limestone Ricla, Saragossa
13LA43 United States Kentucky Limestone Grahampton
13La46 United States Kentucky Limestone Livingstone
13LB12 United States New Jersey Dolomite Newton
13LB45 United States Kentucky Limestone Green Co.
13RA26 Canada Limestone Montreal region
13RB42 United States Indiana Limestone Bedford
13RB5 United States New York Limestone Kingston
13RB8 United States Pennsylvania Limestone Morrell
14LB11 United States Ohio Dolomite Greenfield
14LB14 United States Iowa Dolomite Osage Sta.
14LB45 United States Kentucky Limestone Pineville
14ra13 United States Ohio Dolomite Columbus Grove
14RA21 United States Iowa Limestone Washington
14RA27 United States Tennessee Limestone Nashville
14RA3 United States Illinois Dolomite Saline
14RA6 United States Wisconsin Dolomite Neenah
14RA9 United States Pennsylvania Limestone Vanport
14RB35 Spain Limestone Calatayud, Saragossa
14RB38 United States Pennsylvania Marble Pine Grove Schuylkill Co.
14RB46 United States Kentucky Limestone Stewart's Mill Clark Co.
14RB47 United States Kentucky Limestone Bloomfield
1L1 United States Connecticut Gneiss Milford
1L7 United States Massachusetts Granite Quincy
1L8 United States Massachusetts Granite Quincy
1L9 United States Massachusetts Granite Quincy
1R7 United States Massachusetts Granite Quincy
1R8 United States Massachusetts Granite Quincy
1R9 United States Massachusetts Granite Quincy
4LB16 United States Delaware Gneiss Brandywine
5LA23 United States North Carolina Granite Davidson College
5LA26 Austria Pitchstone Castleruth
5LA31 United States Colorado Granite Salida
5LA33 United States Minnesota Diabase Duluth
5LA34 United States Connecticut Gneiss Middletown
5La35 United States Connecticut Gneiss N. Bridgeport
5La40 United States South Carolina Granite Greenville
5LA43 United States New Hampshire Gneiss Sunapee
5LB19 United States Massachusetts Granite Leominister
5LB21 United States North Carolina Gneiss Henry's Station McDowel Co.
5LB22 United States North Carolina Gneiss Alexander
5LB25 United States Maine Diabase Addison Point
5LB34 United States Minnesota Gabbro Duluth
5LB9 United States Massachusetts Granite Clinton
5RA21 United States Massachusetts Granite W. Quincy
5RA29 United States California Basalt Petaluma
5RA31 United States Georgia Gneiss Atlanta
5RA37 Mexico Andesite Hildalgo State
5RA43 United States New Jersey Diabase Weehawken
5RB12 United States Massachusetts Granite Quincy
5RB13 United States Massachusetts Granite Quincy
5RB14 United States Massachusetts Granite Quincy
5RB16 United States Massachusetts Diabase E. Longmeadow
5RB17 United States Massachusetts Granite Quincy
5RB18 United States Massachusetts Granite Quincy
5RB19 United States Massachusetts Granite Quincy
5RB20 United States Massachusetts Granite Quincy
5RB27 United States Maine Diabase Addison
5RB35 United States Connecticut Diabase New Haven
5RB46 United States Delaware Gneiss Wilmington
6LA18 United States Pennsylvania Sandstone Queens Run Clinton Co.
6LA36 United States Connecticut Gneiss Greenwich
6LA39 United States Massachusetts Gneiss Monson