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| Split face will normally have a dark blue-grey colour with random paler flecks where crinoids are present. The technique often fractures the calcium carbonate crystals giving small reflective planes that make the surface sparkle. Splitting produces an irregular surface which may have quite high relief. Humps, hollows and pits will be randomly developed on the surface and may extend across the block edges. Ashlar traditionally had a chisel dressed edge applied to the exposed face. It will be necessary to dress areas of split stone using a point to remove the visible sawn edges. |
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