This lovely example of a piece of original Marston Marble has been ground gem smooth on all facets and a professional polish applied to reveal beautiful colours and detail throughout this scarse material. Billions of these small ammonites (Promicroceras marstonensse) were killed off in a single catastrophic event some 200 million years ago. This particular piece contains wonderful septarian calcite veins which really adds to the aesthetics. It is also free standing for display purposes.
A lovely half specimen which has been highly polished after being ground gem smooth to reveal stunning detail and colours. Each chamber has been preserved in beautiful gold pyrite and green calcite. Approximately 195 million years old. The matrix has a cut base for upright display.