Ammonite

This is an ammonite set in sterling silver .It has my mark (a swirled S ) stamped on the back .I'm not sure what time period it is from but I would find it interesting to know. Here is a link to read more or you can scroll down to read my recap of the highlights !

http://en.wikipedia.org/wiki/Ammonite

Ammonites are an extinct group of marine animals . Their closest living relatives are the octopus, squid, and cuttlefish. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geological time periods.
Their name came from their spiral shape as their fossilized shells somewhat resemble tightly-coiled rams' horns. Pliny the Elder (d. 79 A.D. near Pompeii) called fossils of these animals ammonis cornua ("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing ram's horns.