Treasures are valuable possessions. A group gathered “our gold, and our silver, and our precious things” from the land of their inheritance (1 Nephi 3:22). They offered these possessions to Laban for the plates of brass (1 Nephi 3:24).
Laban saw “our property, and that it was exceedingly great” and sent his servants to slay them (1 Nephi 3:25). The Lord said that those who “hide up treasures in the earth” would not find them again, except a righteous man who hid them up unto the Lord (Helaman 13:18-19).
When Gadianton robbers infested the land, inhabitants hid their treasures in the earth. The inhabitants “could not hold them, nor retain them again” (Mormon 1:18).