This is Kahelelani poepoe style shell necklace/pendant. This pendant made of green oma'oma'o, natural color ke‘oke‘o and dark burgundy māku‘e Kahelelani shells.
Origin of shells: Niihau
Shells measures: 1 1/2 inch (measures from jump ring to jump ring)
Over all necklace measures : 16 3/4 inches (measures from end to end)
Findings: 14K gold filled
Chain style: Fancy Italian