Ivory
The tusks and teeth of animals such as the elephant, walrus, hippopotamus and sperm whale is where Ivory comes from. There is also what is called fossilized ivory or ancient ivory and comes from the tusks of the woolly mammoth and the mastodon.

Since prehistoric times, humans have carving ivory into personal ornaments, art and utilitarian objects. Contemporary jewelry using ivory is quite rare due to the rapid diminishing of ivory-producing animals and the inhumane practices of poachers and has caused many countries to ban the importation and sale of ivory. This gap has been filled with plastics and other imitations.