Another way to explore the different uses of crystals is through their perceived influence over our chakras, or the centers of physical or spiritual energy within the human body. This is a concept which stems from early Hindu traditions and has modern-day correspondences that are still recognized in yoga, tarot, astrology and homeopathic practices as well.
Each chakra is represented by a color: red for the root chakra, or Muladhara, which is located at the base of the spine; orange for the sacral chakra, or Svadhishthana; yellow for the naval chakra, or Manipura; green for the heart chakra, or Anahata; blue for the throat chakra, or Vishuddha; indigo for the third eye, or Ajna; and violet for the crown chakra, or Sahasrara.
It is generally accepted that the color of a stone or crystal signifies which chakra it will work to harmonize. For example, green stones like green jade or fuchsite are typically believed to work for the betterment of the heart chakra, and violet or purple stones, such as amethyst or lepidolite, are good for the crown chakra. That is not to say, however, that a stone's color-matching chakra is the only chakra to benefit from its use; in fact, lepidolite, although it is usually a shade of lavender or purple, may also be associated with the third eye and heart chakra as well.