The word Chakra means “wheel” in Sanskrit, there are 7 major energy centers in the human body (and hundreds of minor ones). Chakras receive, assimilate, and distribute energy throughout our energetic fields (auras). Each Chakra is unique as it has it’s own characteristics and functions. These 7 energy systems resonate and vibrate at the same frequency as their respective colors of the rainbow, and are the network through which the body, mind and spirit, can come together. Your chakras are also energy vortexes (disc) that distribute universal life force energy throughout the body. This life energy is called “Prana” and flows down through the top of your head (the crown chakra) through your spine, to your pelvic floor (root chakra).
Please read for further understanding….
http://www.thehoodwitch.com/blog/2015/3/12/chakras-stones