The Seventh Chakra, also known as the “Crown Chakra” is represented by a 1000-petaled lotus. It symbolizes the infinite nature of this chakra and thus connects us with the Divine.
Since it is appropriately located at the crown of the head it serves as the crown of the entire chakra system. By symbolizing the highest state of enlightenment the Seventh Chakra helps our mind create a belief system to control our thoughts and actions.
It is often associated with a light violet color and helps us to align ourselves with the “Oneness of the Universe”. We are in control, yet still balanced.

Photo Credit: http://sathyasaibaba.wordpress.com/2008/07/18/chakras-crown-chakra-sahasrara-chakrum/