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Stone description: fine grain
| Wall Number | Country | State | Classification Sort descending | Source |
|---|---|---|---|---|
| 8RB38 | United States | Maryland | Gneiss | Ilchester |
| 10LB25 | United States | Massachusetts | Gneiss | Northfield |
| 5LA34 | United States | Connecticut | Gneiss | Middletown |
| 6RB18 | United States | Pennsylvania | Gneiss | Chester |
| 5La35 | United States | Connecticut | Gneiss | N. Bridgeport |
| 5RB42 | United States | New Jersey | Gneiss | Bloomingdale |
| 6LB18 | United States | Pennsylvania | Gneiss | Philadelphia |
| 6RA36 | United States | Connecticut | Gneiss | Gastonbury |
| 9RA31 | United States | Connecticut | Gneiss | Branford |
| 5RB46 | United States | Delaware | Gneiss | Wilmington |
| 6LA36 | United States | Connecticut | Gneiss | Greenwich |
| 11LB27 | United States | Arkansas | Quartzite | Bald Knob |
| 7RA22 | United States | North Carolina | Quartzite | Hot Springs |
| 10LA49 | United States | Michigan | Quartzite | Vulcan |
| 5LB33 | United States | Minnesota | Quartzite | Courtland |
| 10LB40 | United States | South Dakota | Quartzite | Sioux Falls |
| 7La18 | United States | Pennsylvania | Quartzite | Mapleton |
| 9LB32 | United States | New York | Quartzite | Fort Ann |
| 6RA19 | United States | Pennsylvania | Quartzite | Jacksonwald |
| 6RB1 | United States | Pennsylvania | Quartzite | Huntingdon |
| 9Lb35 | United States | South Dakota | Quartzite | Sioux Falls |
| 6LB47 | United States | Louisiana | Quartzite | Unknown |
| 7RB43 | United States | Wisconsin | Quartzite | Stevens Point |
| 10LB39 | Mexico | Pyrophyllite | Sonora State | |
| 9LB33 | Mexico | Pyrophyllite | Sonora State | |
| 9RB31 | Mexico | Pyrophyllite | Sonora State | |
| 5RA37 | Mexico | Andesite | Hildalgo State | |
| 5RA29 | United States | California | Basalt | Petaluma |
| 5LB36 | Mexico | Basalt | Puebla State | |
| 8RA42 | United States | Oregon | Basalt | Clackamas Station Clackamas Co |
| 5RB37 | Mexico | Basalt | Puebla State | |
| 5LB29 | United States | California | Basalt | Bridgeport |
| 10RB35 | Mexico | Pumice | San Juan, Pueblo State | |
| 5RA45 | Hungary | Conglomerate | Sommerein | |
| 11RA39 | United States | Tennessee | Conglomerate | Ocoee River Polk Co. |
| 8RA27 | United States | Maine | Schist | Knightsville |
| 11RB30 | United States | Virginia | Schist | Farquier Co. |
| 13LA20 | United States | Iowa | Coral | Iowa City |
| 9RA40 | United States | Wyoming | Diorite | Raw Hide Buttes |
| 5RB32 | United States | Colorado | Diorite | Monarch |