Dorje is a Tibetan word.
Symbolically a dorje represents the 'thunderbolt of enlightenment,' that abrupt change in human consciousness which is recognised by all the great religions as a pivotal episode in the lives of mystics and saints.
The Bell and Dorje, or thunderbolt, are inseparable ritual objects in Tibetan Buddhism. They are always used in combination during religious ceremonies.
The Bell held in the left hand, representing the female aspect as wisdom; the Dorje, or male held in the right hand, aspect as method. Together, they represent union of wisdom and method, or the attainment of Enlightenment.