GravestonePreservation.info

Historically numerous substances have been used, in an attempt to make stones last longer when placed outdoors. Olive oil, whale oil, turpentine, and wax represent just a few of the liquids applied to masonry in a mostly vain effort to inhibit the future deterioration of stone.

The following are the most common stone types found in American Graveyards, based on the order they were predominately used.

Slate: 1650-1900 - Metamorphosis Shale