RARE 1970s endangered coral seed botanical jewelry

Botanical, natural, vintage boho necklace made likely in the 1970s in Hawaii from the striking half-red, half-black seeds of Erythrina perrieri, a coral tree native to Madagascar that is a critically endangered genus. The natural “beads” are irregular by nature and linked with brass toned jump rings and connectors. This piece of vintage jewelry was handmade. It is a exceedingly rare vintage piece. EUC as shown.