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Stone description: greenish-gray
| Wall Number | Country | State Sort ascending | Classification | Source |
|---|---|---|---|---|
| 4RB16 | United States | Delaware | Gneiss | Wilmington |
| 5RB32 | United States | Colorado | Diorite | Monarch |
| 7RB28 | United States | California | Sandstone | Sites |
| 8La40 | United States | West Virginia | Sandstone | Parkersburg |
| 11LA35 | United States | Virginia | Granite | Namozine Dist. |
| 11RB32 | United States | Virginia | Granite | Namozine Dist. |
| S1-13 | United States | Unknown | Granite | Unknown |
| 9La32 | United States | Texas | Sandstone | Range |
| 11RA39 | United States | Tennessee | Conglomerate | Ocoee River Polk Co. |
| 10La48 | United States | Rhode Island | Gneiss | Diamond Hill |
| 9RA19 | United States | Pennsylvania | Sandstone | Franklin |
| 5RB7 | United States | Ohio | Sandstone | Cumberland |
| 9RB20 | United States | Ohio | Sandstone | Harmer |
| 5RA23 | United States | North Carolina | Granite | Rockingham |
| 11RB38 | United States | New Jersey | Sandstone | Princetown |
| 5RA42 | United States | New Jersey | Gneiss | Dover |
| 5RB42 | United States | New Jersey | Gneiss | Bloomingdale |
| 12RB34 | United States | Illinois | Limestone | Belknap |
| 10LA41 | Mexico | Tuff | Zacatecas State | |
| 11RB46 | Canada | Sandstone | Cliffton, New Brunswick | |
| 13RA29 | Austria | Marble | Adnet |