| Reference | N4 | N5 | ||
| NAME | Berwyn (honed) | Berwyn (riven) | ||
| TYPE | Slate | Slate | ||
| GEOLOGY | Silurian. Ludlow Beds | Silurian. Ludlow Beds | ||
| COUNTY | Clywd | |||
| COLOUR | Deep blue | Deep blue | ||
| TEXTURE | Extremely fine grained. Finely cleaved | Extremely fine grained. Finely cleaved | ||
| BLOCK SIZE LXBXH (mm) | 2500x1500x75mm | 2500x1500x75mm | ||
| SUITABILITY | Roofing, cladding, paving, cills, copings and fireplaces | Roofing, cladding, paving, cills, copings and fireplaces | ||
| USES (1) | ||||
| USES (2) | ||||
| USES (3) | ||||
| USES (4) | ||||
| Stone Names |