Final answer:
A pivotal moment signifying that friendship outweighs the value of treasure in 'The Hobbit' is when Bilbo Baggins sacrifices his claim on the treasure for the sake of peace among his friends.
Step-by-step explanation:
One of the details from The Hobbit that best develops the theme that friendship is more important than treasure can be found towards the end of the story. When the protagonist, Bilbo Baggins, decides to forgo a portion of his share of the treasure to prevent a deadly conflict between his friends, the dwarves, and the men and elves, this action exemplifies the theme of valuing relationships over material wealth.
This moment shows that the bonds formed through the journey are more significant than the gold and jewels that were the initial goal of their quest.