Ivory

Ivory is dentine, the primary substance that makes up the teeth or tusks of all mammals. It was carved for artistic ornaments and also many practical uses. Some animals that grow large teeth or tusks are behemoth, boar, elephant, hippopotamus, mammoth, narwhal, umber hulk, walrus, and the cachalot whale. The price depended on the hardness, the color or mottling of colors, how well it polished, and current preferences. A typical price range was 1gp to 5gp per pound (0.45kg). Carved and polished ivory items had a base value of 10 gp.