Marston marbles name is confusing as it is not a marble but
these stones contain tiny ammonites over 200 million years old form the Jurassic
period. It is also known as Marston Magna Marble They are not manmade as some
people think but formed naturally with so many specimens, promicroceras
martonensis and ziphoceras ammonites.
These stones are sold and polished good and the mud has
solidified with the white ammonite shells in good display, with brown to grey calcite
as a replacement mineral within the ammonite shell.
This stone was also used as grave markers, but these were
There is only one grave marker in the British Museum.
Some information concerns how to exact location is still mystery,
as many folk tales mentions that these stones were found while digging a well
in church graveyard in Somerset England.