sandstone

No polishing of sandstone will reveal the mottling of marble.

The rocks of the Jason may be seen in any quarry of Warwickshire sandstone.

Quartz, sandstone and the granites are of low cementing value.

If the layers were of sand, the rock is sandstone; if of clay, it is shale.

It is found associated with sandstone, which contains many fossils.

It is described in the Journal's list of exhibits as a "sandstone" ball.

But whoever listed this object was uncareful: it is listed as "sandstone."

Falls of sandstone and limestone are repulsive to both theologians and scientists.

The wood around this sandstone pebble was black, as if charred.

But so hypnotic quasi-reasons: that globular lumps of sandstone are common.