The Ram's horn shell is not actually a shell but the mouth parts of a squid like animal. The wash up on the beaches in many parts of the country. This one is from punakaiki on the west coast of the south island, the larger more open example is from the paekakariki on the kapati coast.
ram's horn pendant
Approximately 10mm long with a 45cm (40cm or 50cm available upon request) fine sterling silver chain.