To put it quite simple, to each of the 7 Chakras of my previous post there can be associated one set of metaphysical chakra crystals. This can be especially important when we try to align, balance, or work in any other way with our seven chakras.

For example, to the first chakra Muladhara, there can be associated mostly black and red stones. Black is the color of grounding and protection, and therefore black stones are appropriate for the first root chakra which corresponds to the most basic material needs of every human being.

To the seventh Chakra, Sahasrara there can be linked transparent crystals like rock crystal, herkimer diamond, topaz, and other brilliant gems. The vibration of the crown chakra is highest possible, and therefore we need chakra crystals that possess highest spiritual vibrations. Colorless chakra crystals with high frequency can penetrate deeply into the aura and enable spiritual insights and enlightenment.