FREE: New Ammonite Fossile and Sterling Silver Pendant

The listing, New Ammonite Fossile and Sterling Silver Pendant has ended.

This is one of my favorite pieces of jewelry. I have sold several. It is an ammonite fossil with sterling silver. And yes it is marked .925. It is 2" X 1 1/4". I wish I had of taken a picture of the back of it, but i didn't, and my camera is down at the moment. The back is cool too. The back isn't flat like this side. It is rounded out and looks more like a stone. Neat how mother nature can make these kinds of things.
Ammonites are cephalopods and first appeared in the seas 415 million years ago, in the form of a straight shelled creature known as Bacrites. During their evolution three catastrophic events occurred. The first during the Permian period (250million years ago), only 10% survived. They went on to flourish throughout the Triassic period, but at the end of this period (206 million years ago) all but one species died. Then they began to thrive from the Jurassic period until the end of the Cretaceous period when all species of ammonites became extinct.
Most ammonites have coiled shells. The chambered part of the shell is called a phragmocone. It contains a series of progressively layered chambers called camerae, which were divided by thin walls called septae. The last chamber is the body chamber. As the ammonite grew, it added new and larger chambers to the opened end of the shell. A thin living tube called a siphuncle passed through the septa, extending from the body to the empty shell chambers. This allowed the ammonite to empty water out of the shell chambers by hyperosmotic active transport process. This process controlled the buoyancy of the ammonite's shell.