Chakras connect your  spiritual bodies to your physical one.  They regulate the flow of energy throughout the electrical network (meridians) that runs through the physical body. The body’s electrical system resembles the wiring in a house. It allows electrical current to be sent to every part, and is ready for use when needed. 

Gemstones can be used to balance a chakra that is out of alignment and heal ailments. Each chakra has a specific color and sound vibration. Although most stones of a specific color will be the stone for healing a particular chakra, some stones may be used to heal more than one chakra. There is a wide range of healing attributes that pertain to various stones and the things that they are known to remedy.

There are seven major chakra centers: 

ROOT CHAKRA - BLACK - OBSIDIAN - stone of truth, protection, integrity, honesty and grounding

SACRAL CHAKRA - ORANGE - CARNELIAN - courage, creativity and vitality

SOLAR PLEXUS CHAKRA - YELLOW - CITRINE - happiness, abundance and personal power

HEART CHAKRA - PINK - ROSE QUARTZ - self love, calming, forgiveness, love and friendship

THROAT CHAKRA - LIGHT BLUE - MAGNESITE -  calming stone to use in meditation, creativity and imagination

THIRD EYE CHAKRA - INDIGO/BLUE - LAPIS LAZULI - clarity and objectivity, self-knowledge and self-expression

CROWN CHAKRA - PURPLE - AMETHYST - spirituality, protection, selflessness, nobleness, balance and inner peace

*Wear stones with conscious intention when using gemstones as healing aids.  Affirming the intention or just feeling it in your heart is good enough.  Choose a stone that calls your attention, be present and open when choosing a stone for yourself.  

Some articles on chakras which helps explain how your energy systems work in more detail.