Jurassic era style is definitely a thing, right?  What makes the ammonite fossils so amazing is not only are they millions of years old, but each of them have a unique fossilization, as well as iridescence on the back of them!  I paired them with smoky quartz to give it an overall earthy look.

Materials are: ammonite fossil shells, faceted smoky quartz beads, with a gold plated brass necklace clasp and extender chain.  Length of necklace is 22.5", and ammonite fossils are approximately 1.5" long and 1.25" wide.  Due to the nature of the ammonites, each one has crevices, and differences in color throughout.  It is on the heavier side, so it is not for those who are unaccustomed to wearing slightly heavier pieces.