Sea lion tusk. This piece was found on the shores of the Peruvian Pacific coast. No animal has been damaged to be marketed. The preservation of Mother Earth and fauna is very important to me, but I accept the gifts that she gives me. this necklace is made in alpaca silver. It is a metal of the result of the combination of 50% of silver with 50% of copper. It is waterproof . You can pick your favorite lenght of chain.