Jaredite Breastplates are breastplates returned by Limhi’s expedition with objects found in a land covered with ruins. The expedition brought “twenty-four plates which are filled with engravings,” and those plates were “of pure gold” (Mosiah 8:7-10).
The recovered armor included “breastplates, which are large.” The breastplates were “of brass and of copper, and are perfectly sound” (Mosiah 8:7-10).