Topic summary
Cone shell
Extracted from the Wikipedia article Cone snail.
As jewelry
Naturally occurring, beach-worn cone shell tops can function as beads without any further modification. In Hawaii, these natural beads were traditionally collected from the beach drift to make puka shelljewelry. Since it is difficult to obtain enough naturally occurring cone snail tops, almost all modern puka shell jewelry uses cheaper imitations, cut from thin shells of other species of mollusk, or made of plastic.