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Stone description: medium grain
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 5RB1 | United States | Ohio | Sandstone | Amherst |
| 8LB1 | Portugal | Marble | Alvrite, Coimbra | |
| 10LB2 | Portugal | Limestone | Alvito, Coimbra | |
| 6LB17 | United States | Pennsylvania | Granite | Allentown |
| 13LB33 | United States | Massachusetts | Marble | Alford |
| 5LB22 | United States | North Carolina | Gneiss | Alexander |
| 9Lb39 | United States | Oregon | Diabase | Albany region |
| 10RB42 | United States | Oregon | Basalt | Albany |
| 9RA38 | Spain | tuff | Alamazanon | |
| 7RB14 | Austria | Marble | Adnet | |
| 7RB5 | Austria | Marble | Adnet | |
| 6C | United States | Indiana | Limestone | ? |