Ivory

Ivory is dentine, the primary substance that makes up the teeth or tusks of all mammals. It is 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 depends on the hardness, the color or mottling of colors, how well it polishes, and current preferences. A typical price range is 1gp to 5gp per pound (0.45kg).