As to the ark of shittim wood and gold, Jeremiah says of it :
They shall say no more 'The ark of the covenant of the Lord' neither shall it come to mind : neither shall they remember it; neither shall they visit it; neither shall it be done any more. Jeremiah 3: 16.
Nor was it, for scripture mentions it no more after his words.
But such things - the artefacts made in the wilderness and constructed in Jerusalem - the writer to the Hebrews describes as :
... the pattern of things in the heavens [Hebrews 9 : 23, KJV.]
And he says that :
Christ is now entered into heaven itself. [Hebrews 9 : 24, KJV]
What John saw in vision is not another pattern, nor a material construct in heaven. He saw a vision. The vision is imagery given that we may have a concept in our mind. Else, we cannot process things through our mind.
It is a concept. Not material.
For heaven is a spiritual place and Christ, himself, is now there.
But such things are beyond our comprehension so we are given imagery, just as before - all men upon earth were given the visible artefacts, the pattern, the representation.
There shall be new heavens and a new earth but of them we are told that eye hath not seen nor ear heard nor hath it entered into the heart of men to conceive of such things, I Corinthians 2 :9, KJV.
Till then we have the written record of artefacts and we have the imagery given to John.