hemacite

from The Century Dictionary.

• noun A plastic material, a substitute for horn, made from blood with the addition of sundry vegetable and mineral materials.

from the GNU version of the Collaborative International Dictionary of English.

• noun A composition made from blood, mixed with mineral or vegetable substances, used for making buttons, door knobs, etc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A material made from sawdust and the blood of slaughtered animals, used in the late nineteenth century for doorknobs, buttons, etc.