Hematite replacement ammonite, framed

This is a cut and polished ammonite from Morocco, where part of the structure has been replaced by the mineral hematite.  The polishing gives the hematite a shiny black appearance which defines the chambers of the ammonite shell very clearly.  You can display this vertically or horizontally.

Ammonites are extinct relatives of modern day nautiloids and squid. The largest known ammonite in the world would have been 8 1/2 feet (2.59 metres) across if it were complete.

1 1/8 inches (2.9 cm) x 7/8 inch (2.2 cm).