A natural cleft or riven face is simply achieved by splitting blocks of stone.
 Fossil Stone |
 Fossil Stone
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Sandstone is a sedimentary rock, made from compressed sand particles. Sandstone is often red to brown, light gray to nearly white. Sometimes it is yellow or green. It usually is composed of rounded grains that are all of the same size; and it is usually medium grained. Some sandstones show slight color variations in layering.
