This necklace uses a vintage porcelain power pole insulator that is found on electrical poles. I found a few of these at trading post in Montana. The insulator has a nice aged patina .

The over the head necklace also has fresh water pearls, Tibetan Agate, stone, metal, glass beads. The charms are a Orthoceras fossil pendant, a cross and an endless circle charm. I think these go nicely with the insulator.