The golden nature values all into gold. I believe this to be the true timeline of the universe; Even though it may never happen, if there is a true end to the world of matter it is when all has been raged into gold, and there is nothing that can be changed anymore.
Invaluable is probably read best as inestimable; of a worth that cant be contained by reason, circumscribed. ‘If the doors of perception were cleansed every value would appear to man as it is: Infinite. For man has closed himself up, till he sees all values thro’ narrow chinks of his cavern.’
It is fitting that the brother of the abyss and the screaming fire eagle above the abyss are the precursors to the golden nature, as gold is birthed in the fury of a star.
(Ultimately, the universe can only end if flux is ended entirely, which means only when all matter has been pressed into gold. The golden nature is the end of time)