Pietra di Matraia
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A medium to fine-grained sandstone with a dark grey groundmass on wich are millimeter sizedwhitish granules that do not mar the stone’s overall chromatic uniformity.
| Types | Pierres marbrières |
| Lieu d'origine | Italie |
| Structure | Uniforme |
| Coloris primaire | Gris |
| Coloris secondaire |



