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Stone description: dark gray
| Wall Number | Country | State Sort ascending | Classification | Source |
|---|---|---|---|---|
| 5LB9 | United States | Massachusetts | Granite | Clinton |
| 9RA23 | United States | Massachusetts | Granite | W. Quincy |
| 5RA21 | United States | Massachusetts | Granite | W. Quincy |
| 6RB22 | United States | Massachusetts | Granite | Rockport |
| 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 |
| 8RB38 | United States | Maryland | Gneiss | Ilchester |
| 6RA40 | United States | Maryland | Gneiss | Ellicott City |
| 7RA25 | United States | Maine | Granite | Canaan |
| 8LA27 | United States | Maine | Diabase | Addison Point |
| 5RB27 | United States | Maine | Diabase | Addison |
| 10LA30 | United States | Maine | Diabase | Vinal Haven |
| 8LB27 | United States | Maine | Granite | St. George |
| 8RA27 | United States | Maine | Schist | Knightsville |
| 6RA25 | United States | Maine | Gneiss | Turner |
| 5LB25 | United States | Maine | Diabase | Addison Point |
| 6RB26 | United States | Maine | Granite | Bryant's Pond |
| 14RB47 | United States | Kentucky | Limestone | Bloomfield |
| 8RA18 | United States | Kentucky | Limestone | Lebanon |
| 13LA43 | United States | Kentucky | Limestone | Grahampton |
| 13La46 | United States | Kentucky | Limestone | Livingstone |
| 13LB45 | United States | Kentucky | Limestone | Green Co. |
| 14LB45 | United States | Kentucky | Limestone | Pineville |
| 14RB46 | United States | Kentucky | Limestone | Stewart's Mill Clark Co. |
| 8LA39 | United States | Kansas | Sandstone | Oswego |
| 12RB23 | United States | Kansas | Limestone | Oswego |
| 12RA17 | United States | Iowa | Dolomite | Garrison |
| 12RB17 | United States | Iowa | Dolomite | Garrison |
| 14LB14 | United States | Iowa | Dolomite | Osage Sta. |
| 11RA16 | United States | Iowa | Dolomite | Osage Sta. |
| 14RA21 | United States | Iowa | Limestone | Washington |
| 13RB42 | United States | Indiana | Limestone | Bedford |
| 12RB4 | United States | Illinois | Limestone | Breese |
| 14RA3 | United States | Illinois | Dolomite | Saline |
| 5RA31 | United States | Georgia | Gneiss | Atlanta |
| 8LA9 | Canada | Limestone | Kingston | |
| 5LA26 | Austria | Pitchstone | Castleruth | |
| 13LA35 | Spain | Limestone | Ricla, Saragossa | |
| 10rb16 | Argentina | Marble | Unkown | |
| 8RA9 | Canada | Limestone | Montreal | |
| 13RA26 | Canada | Limestone | Montreal region | |
| 9LA14 | Spain | Limestone | Murcia, Murcia | |
| 5RA37 | Mexico | Andesite | Hildalgo State | |
| 14RB35 | Spain | Limestone | Calatayud, Saragossa |