| Reference | J1 |
| NAME | Clashach Medium |
| TYPE | Sandstone |
| GEOLOGY | Permo-Triassic. Hopeman Sandstone |
| COUNTY | Grampian |
| COLOUR | Golden to pale brown with medium colour mottling |
| TEXTURE | Fine grained |
| BLOCK SIZE LXBXH (mm) | 3000x1800mm |
| SUITABILITY | Ashlar, cladding, dressings and weathering courses |
| USES (1) | Chandos House, London |
| USES (2) | National Gallery, Edinburgh |
| USES (3) | Bolsover Castle, Derbyshire |
| USES (4) | New Museum of Scotland, Edinburgh |
| Stone Names | J1 |