Also among her symbols: "the ark of the Testimony".
This ark was made of acacia wood that cannot be moth -eaten, and was covered with gold from inside and outside (Ex. 25:10, 22), as a symbol of the purity and the greatness of The Virgin. It also symbolized the things which were inside the ark that were a symbol of the Christ our Lord.
There was kept "the golden pot that had the manna, Aaron's rod that budded, and the tablets of the covenant" (as a symbol of the incarnated Word of God).