The Sahasrara, also known as the Crown Chakra, is located at the top of the head and is associated with the colors White and Violet. The Crown Chakra is connected to the pineal-cerebral cortex, the central nervous system, and the right eye. It’s function is our connection to the universe, and for some, it is a gateway for energy and knowledge.
As such, when balanced here, one will feel a strong connection with spirituality, a connection to the cosmos and all it contains. One may feel inspired to live a life with meaning.
When unbalanced, one might go into a total defeat mode, depression can hit, and one may feel as if he/she has no direction. When this Chakra is blocked, you are completely cut off from the universal light. Now with that said, hardly anyone endures a complete blockage. It is believed that only the most heinous of people lose it, and we are the ones who see the wreckage they cause in their wake.
Now, when you are open in this Chakra, you are connected to the spiritual, you are able to see the bigger picture, you have the ability to gain a small understanding of why things happen the way they do.
With respect to healing and balancing this Chakra, one may use crystals or stones, such as: Amethyst, Alexandrite, Purple Fluorite, Sugilite, Quartz, Diamond, and Selenite.
Whether you use Crystals, or not, utilizing this gateway, your own little personal stargate, you can make your way to unification with your Higher-Self. You can achieve oneness with the infinite all, communication with your outer guides, and be able to traverse beyond the space-time continuum (for those who use astral travel).
On the physical world part of the spectrum, having this one in order will make it much easier to deal with day-to-day life. Your perception of it all will change, this change will allow you to see what is really going on, outside of what you are shown. To put it plainly, it will allow you to see through what is nothing more than nonsense.
In closing, the short of it is that this one little Chakra with a big responsibility can make your life a heaven, or it can make it the proverbial hell. Be sure to take exceptional care of it.
Below is a sound meditation by Meditative Mind for healing and balancing your Crown Chakra.