Bone

Bone is a natural material that can be used in place of wood, stone, or metal in weapons armor, or other crafting projects. Other animal-based materials such as horn, shell, or ivory are treated the same as bone. The cost of bone weapons or armor is half the price of a normal item of this type made out of metal.   Weapons   Bone weapons have half the hardness of the base weapons, and have the fragile quality. Masterwork weapons also have this quality, but magic items don't. They do have a -2 penalty to damage dealt, with a minimum of 1 damage.   Armor   Most armor can be constructed of bone. It either replaces the metal components or in the case of wood, large pieces of one or shell replace it. Bone has a Hardness of 5 and has the fragile quality. Masterwork has the same quality, but magical armor doesn't. The armor and shield armor bonus is reduced by 1, and studded leather armor check penalty is reduced by 1.