Pyrite

This stone, known for its brilliant golden color and traditional association with money and good luck, carries a fascinating history. Its name, derived from the Greek word meaning "a stone which strikes fire," alludes to its striking appearance that resembles fire. It's no wonder that Pyrite is often referred to as fool's gold, as it has been mistaken for the precious metal throughout history. Interestingly, Pyrite deposits are often found in close proximity to gold, such as in Illinois and Missouri in the U.S., as well as in countries like England, Germany, Peru, Russia, Spain, and South Africa.
Beyond its stunning appearance, Pyrite also possesses powerful metaphysical properties. It acts as an energy shield, effectively blocking negative energies from various sources. Additionally, Pyrite aids in fostering open and honest communication, providing both emotional and physical protection to its user. For those struggling with indecisiveness or uncertainty, carrying a pyrite stone can serve as a touchstone, boosting self-confidence and clarity of mind.

Not only does Pyrite hold significance in the realm of metaphysics, but it also played a role in spiritual practices of Native Americans. Native Americans regarded Pyrite crystals as tools for scrying, believing that they could peer into the depths of one's soul by gazing into a polished piece of this mesmerizing stone. Shamans considered it "a stone of power," utilizing its energy in their healing rituals.

One of the most intriguing aspects of Pyrite's metaphysical properties is its ability to enhance the balance and flow between the right and left hemispheres of the brain. This harmonization allows for the transformation of intuitive and creative thoughts into logical and well-reasoned actions. In this way, Pyrite supports a more holistic and integrated approach to problem-solving and decision-making.

In summary, Pyrite transcends its outward appearance as a stunning golden stone and embraces a rich tapestry of symbolism, history, and metaphysical properties. Not only does it serve as a symbol of money and good luck, but it also acts as a powerful energy shield, promotes open communication, and aids in self-confidence. Its significance in spiritual practices and its ability to balance brain functions make it a truly remarkable crystal to behold.

Edgar Cayce recommended that "to carry a piece of Carbon Steel in one's pocket (preferably a groin pocket) would inhibit one from catching a cold or infection".  Carbon Steel is a mixture of Iron and Carbon, to which Pyrite is similar and claims the same health benefit.

It assists in:

Fortification and strengthening the mind.
Blocks and shields negativity.
Energizing the area that you put it in.
Harmonizes dualities. 
Psychic development. 
Enhances memory. 
Increases energy and stamina. 
Determination. 
Promotes self-confidence. 
Attracts wealth and good fortune.

On the physical level it can assist with the following:

Overcoming lethargy and fatigue.
Increasing oxygen supply to the blood.
Strengthening the circulatory system.
Lungs
Alleviating bronchitis and asthma.
Infections
Viruses and fevers
Blood disorders
Increases memory; bone and cellular formation
Helps repair DNA/RNA damage
Digestive tract problems
Relieves anxiety and stress.

Chakra associated with:

Base chakra
Solar Plexus
Third Eye

Astrological signs associated with: Leo