The Serpent Heads Bangle with Emeralds

Historically, serpents and snakes represent fertility or a creative life force. 

As snakes shed their skin through sloughing, through their mouth, they are symbols of rebirth, transformation, immortality and healing. They are a symbol of eternity and continual renewal of life.

In some Abrahamic traditions, the serpent represents desires and in Ancient Egypt its history is prevalent from a means of protection to an objective in the underworld.