1- The crucible in a dream links in with receptivity; intuition and the creative side of the dreamer. As a container which is capable of withstanding great heat, it is the aspect which can contain change and make it happen.
2- Psychologically we all hold within ourselves great power which, when released, enables us to take responsibility for others as well as ourselves.
3- Manifestation of spiritual or psychic energy can be perceived as a crucible, a transforming receptacle.
[1]See Also: spiritual imagery in the introduction
[2]