Ammonite fossil necklaces
Ammonites are excellent index fossils, and it is often possible to link the rock layer in which a particular species or genus is found to specific geological time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled and nonspiraled forms (known as heteromorphs).
- Plain sterling silver chain (specify 16 or 18 inch)
- Sterling silver ball chain (specify 16 or 18 inch)
- Plain 20 inch sterling silver chain
- 20 inch Sterling silver ball chain