Gorgeous, 10mm Petoskey Stone Fossil Beads are highlighted with an artisan hammered sterling silver bead, sterling spacer beads, and finished with a sterling silver toggle charm.  Petoskey Stones are a very popular and somewhat rare stone that can be worn as a wonderful neutral, dressed up or down. Choice of 3 lengths.  If you require a custom length, no problem!  Please simply contact us.  Petoskey Stone Wiki: Petoskey stones are found in the of the . They are fragments of a coral reef that was originally deposited during the period. When dry, the stone resembles ordinary but when wet or polished using techniques, the distinctive mottled pattern of the six-sided coral fossils emerges.