What are the various figures of speech used in Rabindranath Tagore's poem "Govinda's Disciple"?

I think that one can examine the imagery used to describe
the bangles the first time the guru examines them when given by the student.  An example
of personification could be seen when the diamonds "darted shafts of light."  The
implication here is that the diamonds have come to life, reflecting the severe love the
student holds for the bangles, almost to value them more than anything else.  The
personification reflects how things, according to the student, hold value and meaning. 
They seem to hold their own meaning, being their own agent of action, above all else. 
This might be why the very next line reflects the loss of this, when Tagore writes that
"it slipped from his hand and rolled down the bank."  Again, personification might be
present in describing the student's love for the object.  In these figures of speech,
the idea of the object holding value is something that brings out how the student viewed
the objct, explaining why he was destined to lose it.